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Rev. Inst. Adolfo Lutz ; 82: e38222, maio 2023. ilus


Adult forms of lepidopterans can cause health problems. This type of incident is known as Lepidopterism, which is caused by contact with urticating setae released by adults, such as those from the Hylesia Hübner (Saturniidae) genus. In this study, the objective is to document a new occurrence of lepidopterism caused by specimens of Hylesia nigricans(Berg, 1875) (Lepidoptera: Saturniidae). The outbreak took place in the summer of 2017 in the municipality of Três Coroas, Rio Grande do Sul, Brazil. During this period, approximately 300 people were affected by dermatitis in the municipality.The outbreak resulted from the release of two types of urticating setae by female moths in the area. We want to emphasize that in case of proliferation of this moth species, it is essential to instruct the population to avoid direct contact with these insects. Monitoring these groups of lepidopterans is fundamental in facilitating decision-making and ensuring public health. (AU)

Formas adultas de lepidópteros podem causar problemas de saúde. Esse tipo de acidente é conhecido como lepidopterismo, causado pelo contato com cerdas urticantes liberadas por adultos, como as do gênero Hylesia Hübner (Saturniidae). Neste estudo, o objetivo é registrar uma nova ocorrência de lepidopterismo causado por espécimes de Hylesia nigricans (Berg, 1875) (Lepidoptera: Saturniidae). O surto ocorreu no verão de 2017, no município de Três Coroas, Rio Grande do Sul, Brasil. No período, aproximadamente 300 pessoas foram acometidas por dermatite no município. O surto foi causado pela liberação de dois tipos de setas urticantes das mariposas fêmeas no ambiente. Ressaltamos que na ocorrência da proliferação dessa espécie de mariposa, é importante instruir a população a evitar o contato direto com esses insetos. O monitoramento desses grupos de lepidópteros é fundamental para facilitar a tomada de decisões e garantir a saúde pública. (AU)

Pruritus , Brazil , Public Health , Dermatitis , Environmental Health Surveillance , Lepidoptera , Moths
Chinese Journal of Preventive Medicine ; (12): 778-784, 2023.
Article in Chinese | WPRIM | ID: wpr-985472


Chronic pruritus seriously affects the quality of life of patients, which is closely related to stress, anxiety and depression. Prolonged and repeated pruritus can induce negative emotions such as anxiety and depression, while continued increased negative emotions can also promote exacerbation of pruritus, which drives the itch scratch cycle, thereby further aggravating skin damage. More and more studies have explored the mechanism of pruritus, anxiety and depression. This article mainly reviews the clinical relationship between pruritus and anxiety, depression and the new progress of its possible mechanism, providing reference for the prevention, control and effective treatment of chronic pruritus, anxiety and depression.

Humans , Depression , Quality of Life , Anxiety , Pruritus/psychology
Acta Academiae Medicinae Sinicae ; (6): 493-499, 2023.
Article in Chinese | WPRIM | ID: wpr-981296


Atopic dermatitis(AD),a chronic and relapsing skin disease,is characterized by dry skin and pruritus,severely affecting the quality of patients' life.Accurately grasping the diagnostic criteria and severity assessment is essential and helps to avoid misdiagnosis and missed diagnosis.Moreover,it facilities the development and adjustment of the therapeutic schedule according to the therapeutic reaction and disease control conditions.This article reviews the research advances in the diagnostic criteria and severity assessment of AD.

Humans , Dermatitis, Atopic/drug therapy , Pruritus , Skin Diseases , Severity of Illness Index
Neuroscience Bulletin ; (6): 793-807, 2023.
Article in English | WPRIM | ID: wpr-982434


Itch is an unpleasant sensation that provokes the desire to scratch. While acute itch serves as a protective system to warn the body of external irritating agents, chronic itch is a debilitating but poorly-treated clinical disease leading to repetitive scratching and skin lesions. However, the neural mechanisms underlying the pathophysiology of chronic itch remain mysterious. Here, we identified a cell type-dependent role of the anterior cingulate cortex (ACC) in controlling chronic itch-related excessive scratching behaviors in mice. Moreover, we delineated a neural circuit originating from excitatory neurons of the ACC to the ventral tegmental area (VTA) that was critically involved in chronic itch. Furthermore, we demonstrate that the ACC→VTA circuit also selectively modulated histaminergic acute itch. Finally, the ACC neurons were shown to predominantly innervate the non-dopaminergic neurons of the VTA. Taken together, our findings uncover a cortex-midbrain circuit for chronic itch-evoked scratching behaviors and shed novel insights on therapeutic intervention.

Mice , Animals , Gyrus Cinguli/physiology , Pruritus/pathology , Mesencephalon , Cerebral Cortex/pathology , Neurons/pathology
Braz. J. Pharm. Sci. (Online) ; 59: e201085, 2023. graf
Article in English | LILACS | ID: biblio-1429968


Abstract Nitric oxide (NO) is an abundant mediator which is demonstrated to be involved in pruritus. Assuming that the increased NO also mediates chloroquine-induced pruritus, which is a frequent complication seen in the chronic chloroquine treatment, the current study aimed to investigate the effect of quercetin and the role of NO in chloroquine-induced pruritus in C57BL/6 mice. Model was created with subcutaneous chloroquine (400µg/site) injection to the nape of the mice. Effect of quercetin and role of NO were investigated with administration of quercetin, and co-administration with L-NAME, 7-NI and L-arginine before chloroquine injection. Locomotor activity was assessed by activity cage and number of the scratching bouts after chloroquine injection was recorded for 30 minutes. Our results show that quercetin significantly reduced scratching bouts at the doses of 10, 20, 40 and 80 mg/kg. Locomotor activity was decreased at the 40 and 80 mg/kg doses of quercetin. Additionally, decrease of the number of scratching bouts by quercetin prevented by L-arginine treatment, while L-NAME and 7-NI enhanced the anti-pruritic effect of sub-effective doses of quercetin. Therefore, our study demonstrated that acute injection of quercetin significantly diminished chloroquine-induced scratching behavior, and this effect is partly mediated by inhibition of neuronal nitric oxide synthase enzyme.

Animals , Male , Mice , Pruritus/chemically induced , Quercetin/adverse effects , Chloroquine/administration & dosage , Nitric Oxide/agonists , Motor Activity
Arq. Asma, Alerg. Imunol ; 6(1): 4-48, jan.mar.2022. ilus
Article in English, Portuguese | LILACS | ID: biblio-1400091


A alergia ocular, também conhecida como conjuntivite alérgica (CA), é uma reação de hipersensibilidade mediada por imunoglobulina E (IgE) do olho desencadeada por aeroalérgenos, principalmente ácaros da poeira doméstica e pólen de gramíneas. Os sintomas geralmente consistem em prurido ocular ou periocular, lacrimejamento e olhos vermelhos que podem estar presentes durante todo o ano ou sazonalmente. A alergia ocular tem frequência elevada, é subdiagnosticada e pode ser debilitante para o paciente. É potencialmente danosa para a visão, nos casos em que ocasiona cicatrização corneana grave, e na maioria dos pacientes associa-se a outros quadros alérgicos, principalmente rinite, asma e dermatite atópica. É classificada em conjuntivite alérgica perene, conjuntivite alérgica sazonal, ceratoconjuntivite atópica e ceratoconjuntivite vernal. O diagnóstico procura evidenciar o agente etiológico e a confirmação se dá pela realização do teste de provocação conjuntival. O tratamento baseia-se em evitar o contato com os desencadeantes, lubrificação, anti-histamínicos tópicos, estabilizadores de mastócitos, imunossupressores e imunoterapia específica com o objetivo de obter o controle e prevenir as complicações da doença.

Ocular allergy, also known as allergic conjunctivitis, is an immunoglobulin E-mediated hypersensitivity reaction of the eye triggered by airborne allergens, primarily house dust mites and grass pollen. Symptoms usually consist of ocular or periocular itching, watery eyes, and red eyes that may be present year-round or seasonally. Ocular allergy has a high frequency, is underdiagnosed, and can be debilitating for the patient. It is potentially harmful to vision in cases of severe corneal scarring, and in most patients, it is associated with other allergic conditions, especially rhinitis, asthma, and atopic dermatitis. It is classified as perennial allergic conjunctivitis, seasonal allergic conjunctivitis, atopic keratoconjunctivitis, and vernal keratoconjunctivitis. Diagnosis seeks to identify the etiologic agent, and confirmation is given by conjunctival provocation testing. Treatment is based on avoiding contact with triggers, lubrication, topical antihistamines, mast cell stabilizers, immunosuppressants, and specific immunotherapy with the aim of achieving control and preventing disease complications.

Humans , Therapeutics , Conjunctivitis, Allergic , Diagnosis , Keratoconjunctivitis , Patients , Plants, Medicinal , Pruritus , Psychotherapy , Asthma , Signs and Symptoms , Societies, Medical , Vision, Ocular , Climate Change , Conjunctivitis, Allergic/complications , Conjunctivitis, Allergic/epidemiology , Complementary Therapies , Immunoglobulin E , Serologic Tests , Skin Tests , Allergens , Rhinitis , Rhinitis, Allergic, Seasonal , Probiotics , Acupuncture , Pyroglyphidae , Dermatitis, Atopic , Environmental Pollution , Allergy and Immunology , Antibodies, Monoclonal, Humanized , Omalizumab , Mast Cell Stabilizers , Histamine Antagonists , Hypersensitivity , Immunosuppressive Agents , Immunotherapy , Medicine, Ayurvedic , Mites
Chinese Journal of Burns ; (6): 532-537, 2022.
Article in Chinese | WPRIM | ID: wpr-940956


Objective: To explore the clinical effects of autologous follicular unit extraction (FUE) transplantation in the treatment of small area secondary cicatricial alopecia (hereinafter referred to as cicatricial alopecia) after burns. Methods: A retrospective observational study was carried out. According to the adopted treatment methods, 18 patients (12 males and 6 females, aged (29±6) years) who received autologous FUE transplantation for small area cicatricial alopecia after burns from March 2017 to November 2019 in the First Affiliated Hospital of Air Force Medical University were included in FUE transplantation group, and 18 patients (13 males and 5 females, aged (33±5) years) who were treated with expanded flap transplantation for small area cicatricial alopecia after burns by the same surgery team during the same period in the same hospital were included in expanded flap transplantation group. All the patients were followed up for more than 1 year. At the last follow-up, the follicular unit density in the transplanted area was measured by Folliscope hair detection system and the hair survival rate was calculated; the visual analogue scale (VAS) method was adopted to evaluate the treatment effect; patients were asked their satisfaction with the treatment effect and the occurrence of complications during follow-up; the hair growth and the scalp thickness, pain, pruritus, pigmentation, and surface roughness of the transplanted area were recorded. Data were statistically analyzed with Fisher's exact probability test and independent sample t test. Results: At the last follow-up, the follicular unit density in the transplanted area of patients in FUE transplantation group was (46.8±2.0)/cm2, which was significantly higher than (42.5±4.3)/cm2 in expanded flap transplantation group (t=3.84, P<0.01); the hair survival rates of patients were similar between the two groups (P>0.05). At the last follow-up, VAS scores evaluating the treatment effect of patients were similar between the two groups (P>0.05); the satisfaction score of patients toward the treatment effect in FUE transplantation group was 8.6±1.1, which was significantly higher than 7.6±0.8 in expanded flap transplantation group (t=2.89, P<0.01). During the follow-up, no inflammation or infection occurred in patients of the two groups, but only 2 patients in expanded flap transplantation group had postoperative pain. At the last follow-up, the transplanted area of patients in the two groups was covered with new hair, and the hair growth direction was basically consistent with the surrounding normal hair; scalp thickness, pain, pruritus, pigmentation, and surface roughness of the transplanted area of patients were similar between the two groups (P>0.05). Conclusions: Autologous FUE transplantation has better long-term follicular unit density and patients' satisfaction than expanded flap transplantation in the treatment of small area cicatricial alopecia after burns, showing better postoperative effect and a good prospect of clinical application.

Female , Humans , Male , Alopecia/surgery , Burns/surgery , Cicatrix/surgery , Hair Follicle , Pain/complications , Pruritus/complications
Neuroscience Bulletin ; (6): 373-385, 2022.
Article in English | WPRIM | ID: wpr-929118


Mitochondrial reactive oxygen species (mROS) that are overproduced by mitochondrial dysfunction are linked to pathological conditions including sensory abnormalities. Here, we explored whether mROS overproduction induces itch through transient receptor potential canonical 3 (TRPC3), which is sensitive to ROS. Intradermal injection of antimycin A (AA), a selective inhibitor of mitochondrial electron transport chain complex III for mROS overproduction, produced robust scratching behavior in naïve mice, which was suppressed by MitoTEMPO, a mitochondria-selective ROS scavenger, and Pyr10, a TRPC3-specific blocker, but not by blockers of TRPA1 or TRPV1. AA activated subsets of trigeminal ganglion neurons and also induced inward currents, which were blocked by MitoTEMPO and Pyr10. Besides, dry skin-induced chronic scratching was relieved by MitoTEMPO and Pyr10, and also by resveratrol, an antioxidant. Taken together, our results suggest that mROS elicit itch through TRPC3, which may underlie chronic itch, representing a potential therapeutic target for chronic itch.

Animals , Mice , Antioxidants/pharmacology , Mitochondria , Pruritus/chemically induced , Reactive Oxygen Species/metabolism , TRPA1 Cation Channel
Braz. arch. biol. technol ; 65: e22210268, 2022. tab
Article in English | LILACS | ID: biblio-1364472


Abstract: Sulfur mustard is one of the chemical warfare agent. It rapidly reacts with the cutaneous tissues and other tissues, leading to various devastating long-term effects on human health. Mustard-exposed veterans suffer from its chronic skin problems, including itching, burning sensation, and eczema. We aimed to evaluate the protective effects of Myrtus communis L. (myrtle) on chronic skin lesions and quality of life of sulfur mustard-exposed veterans. In this randomized, double-blind clinical trial, 60 sulfur mustard-exposed patients were evaluated. Thirty patients received myrtle essence 5% cream (case group) and 30 patients received Eucerin cream (placebo group) twice in a day for one month. Then, We assessed the chronic skin problems and itching-related parameters (such as the itching time, severity, distribution, frequency, and calculated itching score), duration of sleep, number of waking up at night, and quality of life in the both groups. Our analysis of data revealed that application of myrtle cream effectively decreased skin problems including; itching and burning sensation. Additionally, myrtle markedly decreased skin lesion symptoms such as excoriation in the case group as compared with before treatment. Noticeably, myrtle cream significantly improved quality of life of the patients in the case group. The present study provides more in-depth information regarding the protective role of myrtle on the sulfur mustard-induces skin complication. Also, myrtle effectively improved quality of life of the sulfur mustard-exposed veterans.

Humans , Middle Aged , Skin Diseases/chemically induced , Plant Extracts/therapeutic use , Chemical Warfare Agents/toxicity , Myrtus communis/therapeutic use , Phytotherapy , Mustard Gas/toxicity , Pruritus/chemically induced , Quality of Life , Veterans , Indicators of Quality of Life , Eczema/chemically induced , War Exposure/adverse effects , Iran
An. bras. dermatol ; 96(6): 700-705, Nov.-Dec. 2021. tab
Article in English | LILACS | ID: biblio-1355641


Abstract Background: Lichen simplex chronicus is a dermatological condition due to excessive scratching, with few studies on psychoneuroimmunology. Objective: We aimed to estimate the levels of stress, depression, and anxiety, and to measure serum levels of neurotrophins in patients with lichen simplex chronicus, and to correlate these parameters with the severity of the disease and pruritus. Methods: Thirty-six patients with lichen simplex chronicus and 36 age- and sex-matched healthy controls were included. Each participant was administered the Hospital Anxiety and Depression Scale and Perceived Stress Scale questionnaires, along with a visual analog scale for pruritus. Levels of neurotrophins (brain-derived neurotrophic factor, neurotrophin-3, nerve growth factor, glial cell line-derived neurotrophic factor) were determined by ELISA assays. Results: The scores of Perceived Stress Scale-10, Hospital Anxiety and Depression Scale were statistically higher in patients (p < 0.05 for all). The serum levels of all neurotrophins were significantly lower in patients compared to healthy controls (p < 0.05 for all). Disease severity showed no correlation with all four neurotrophins. In linear regression models applied for increased visual analog scale-pruritus scores and disease severity these two variables were statistically significant predictors (p = 0.043). Study limitations: A direct causal relationship was not addressed. Conclusion: Lichen simplex chronicus patients are at risk of increased levels of stress, anxiety, depression, and present decreased levels of neurotrophins, that may suggest a role in the pathophysiology of this disorder.

Humans , Neurodermatitis , Anxiety , Anxiety Disorders , Pruritus , Depression
Arq. Asma, Alerg. Imunol ; 5(4): 416-421, out.dez.2021. ilus
Article in English, Portuguese | LILACS | ID: biblio-1399806


A dermatite atópica (DA) é uma doença inflamatória crônica da pele, caracterizada por intenso prurido e eczema recorrente. Acomete principalmente a infância, mas tem se tornado bastante prevalente em adolescentes e até em adultos. Apesar de ser geralmente não fatal, apresenta uma carga psicossocial importante para os pacientes e seus familiares. O tratamento da DA envolve a hidratação cutânea e medicações anti-inflamatórias. Em casos graves, pode haver necessidade de terapia sistêmica com imunossupressores como ciclosporina, metotrexato e azatioprina. Mais recentemente, alguns imunobiológicos estão em desenvolvimento para controle da DA. O dupilumabe é um anticorpo monoclonal com ação dupla anti-IL-4/IL-13, liberado para tratamento de crianças a partir de 6 anos com DA grave e adolescentes/adultos com DA moderada a grave. O objetivo deste artigo foi relatar uma série de casos de pacientes adolescentes e adultos com DA grave e sua resposta ao dupilumabe durante a pandemia do COVID-19. Trata-se de quatro pacientes (três do sexo feminino), com piora significativa da DA durante o ano de 2020. Todos tinham história de DA desde a infância, com exames complementares evidenciando sensibilização IgE-mediada para ácaros. Já haviam sido submetidos a diversos tratamentos tópicos e sistêmicos, inclusive a cursos de corticosteroides orais. Nenhum deles havia recebido imunossupressor sistêmico, porém estavam recusando este tipo de tratamento devido ao medo da pandemia. Todos apresentaram boa resposta ao dupilumabe, evidenciada pela redução do número de lesões cutâneas e prurido, com poucos efeitos colaterais. Dois pacientes apresentaram sintomas sugestivos de COVID-19 durante o tratamento com dupilumabe (um com confirmação por PCR), com boa evolução. Concluindo, os pacientes com DA grave possuem grande impacto na qualidade de vida e, durante a pandemia de COVID-19, muitos apresentaram piora significativa do seu quadro dermatológico. Nesse contexto, o dupilumabe se mostrou uma opção terapêutica eficaz e segura para tratamento destes pacientes.

Atopic dermatitis (AD) is a chronic inflammatory skin disease characterized by intense itching and recurrent eczema. It mainly affects childhood but has become quite prevalent in adolescents and even adults. Despite being generally nonfatal, it has an important psychosocial burden for patients and their families. AD treatment involves skin hydration and antiinflammatory medications. In severe cases, systemic therapy with immunosuppressive agents such as cyclosporine, methotrexate, and azathioprine may be necessary. More recently, some biologicals are being developed to control AD. Dupilumab is a monoclonal antibody with anti-IL-4/IL-13 dual-action, approved for the treatment of children from 6 years of age with severe AD and adolescents/adults with moderate to severe AD. This article aimed to report a case series of adolescent and adult patients with severe AD and their response to dupilumab during the COVID-19 pandemic. These are four patients (three female), with a significant worsening of AD during the year 2020. All had a history of AD since childhood, with complementary exams showing IgE-mediated sensitization to mites. They had already undergone several topical and systemic treatments, including courses on oral corticosteroids. None of them had received systemic immunosuppressive agents, but they were refusing this type of treatment due to fear of the pandemic. All had a good response to dupilumab, evidenced by a reduction in the number of skin lesions and pruritus, with few side effects. Two patients had symptoms suggestive of COVID-19 during treatment with dupilumab (one confirmed by PCR) with a good outcome. In conclusion, patients with severe AD have a great impact on quality of life and, during the COVID-19 pandemic, many had a significant worsening of their dermatological condition. In this context, dupilumab proved to be an effective and safe therapeutic option for the treatment of these patients.

Humans , Adolescent , Young Adult , Dermatitis, Atopic , Antibodies, Monoclonal, Humanized , COVID-19 , Patients , Pruritus , Quality of Life , Asthma , Signs and Symptoms , Azathioprine , Therapeutics , Biological Products , Immunoglobulin E , Interleukin-4 , Interleukin-13 , Rhinitis, Allergic , Mites
Arq. Asma, Alerg. Imunol ; 5(4): 437-441, out.dez.2021. ilus
Article in English | LILACS | ID: biblio-1399813


Atopic Dermatitis, also called atopic eczema, is a complex systemic inflammatory disease with heterogeneous clinical morphologies. Common features are eczematous lesions, intense pruritus and chronic or relapsing disease course. Eczematous lesions typically show an age-related distribution. However, this disease can present different phenotypes, like follicular/papular dermatitis and prurigo nodularis. We reported a male, 22 years old, phototype IV, African descent, with personal and familial history of atopy. He reported pruritus, xerosis and lesions on skin since he was 2 years-old, with relapsing and chronic course. Clinical examination showed disseminated perifollicular accentuation and rough follicular papules. Extensor surfaces of the legs showed excoriated papules and nodules, beside generalized post-inflammatory hypopigmentation. He had lichenified plaques on the back, neck, hands and foot. Skin biopsy showed spongiosis, parakeratosis and irregular acanthosis at the epidermis. The diagnosis was late and occurred only in adulthood. Due to the extensive and relapsing presentation, he received Cyclosporin 3 mg/Kg/day, associated to steroids and emollients, with improvement of pruritus, xerosis and lechinification. But he maintained perifollicular accentuation. The patient presented common features of Atopic Dermatitis, like chronic and relapsing lesions, history of atopic, dry skin, pruritus, and early disease onset. However, atypical morphologies were presented, exemplified by prurigo nodularis and follicular/papular dermatitis. Other relevant finding it was the fact that the lesions occurred outside the classic areas, with prevalence on extensor surfaces and trunk. These atypical morphologies and unusual location of lesions are prevalent on adults with high phototypes, as seen in this case. It is essential to identify these challenging phenotypes, because the diagnosis of Atopic Dermatitis is clinical. Given the diversity of clinical presentation and difficult to recognize some cases, this article will contribute to demonstrate atypical manifestations and common features in non-white patients, facilitating correct diagnosis and early treatment.

A dermatite atópica, também chamada de eczema atópico, é uma doença inflamatória sistêmica complexa, com morfologias clínicas heterogêneas. As características comuns são lesões eczematosas, prurido intenso e curso crônico ou recidivante. Lesões eczematosas geralmente mostram uma distribuição relacionada à idade. No entanto, essa doença pode apresentar diferentes fenótipos, como dermatite folicular/papular e prurigo nodular. Relatamos um homem, 22 anos, fototipo IV, afrodescendente, com história pessoal e familiar de atopia. Referia prurido, xerose e lesões na pele desde os 2 anos, com recidiva e curso crônico. O exame clínico mostrou acentuação perifolicular disseminada e pápulas foliculares ásperas. As superfícies extensoras das pernas apresentavam pápulas e nódulos escoriados, além de hipopigmentação pós-inflamatória generalizada. Notaram-se placas liquenificadas no dorso, pescoço, mãos e pés. A biópsia de pele demonstrou espongiose, paraqueratose e acantose irregular na epiderme. O diagnóstico foi tardio e ocorreu apenas na idade adulta. Devido ao quadro clínico extenso e recidivante, recebeu Ciclosporina 3 mg/Kg/dia, associada a esteroides e emolientes, com melhora de prurido, xerose e liquenificação, mas manteve a acentuação perifolicular. O paciente apresentava características comuns de dermatite atópica, como lesões crônicas e recidivantes, história de atopia, pele seca, prurido e início precoce da doença, no entanto, foram apresentadas morfologias atípicas, exemplificadas por prurigo nodular e dermatite folicular/papular. Outro achado relevante foi o fato das lesões localizarem-se em áreas não clássicas da doença, com predomínio nas superfícies extensoras e tronco. Essas morfologias atípicas e localizações incomuns são prevalentes em adultos com fototipos elevados, como visto neste caso. É essencial identificar esses fenótipos desafiadores, porque o diagnóstico de dermatite atópica é clínico. Devido à diversidade de apresentações clínicas e dificuldade de reconhecimento de alguns casos, este artigo contribuirá para demonstrar manifestações atípicas e características comuns em pacientes não brancos.

Humans , Male , Young Adult , Phenotype , Hypopigmentation , Black People , Dermatitis, Atopic , Pruritus , Skin , Therapeutics , Back , Cyclosporine , Diagnosis , Torso , Foot , Hand , Neck
Article in Spanish | LILACS, UY-BNMED, BNUY | ID: biblio-1358322


Se describe los casos de tres pacientes a quien se les realiza diagnóstico de colestasis intrahepática del embarazo (CIE) de aparición temprana. En dos de ellos el diagnóstico se relacionó con infección por el virus de la hepatitis C (VHC). Reconocer que esta enfermedad puede presentarse de manera temprana en el embarazo y su relación con la infección por el VHC es fundamental para hacer un diagnóstico oportuno de ambas enfermedades y tomar las conductas terapéuticas adecuadas, mejorando así el pronóstico materno y fetal.

It is of great importance to acknowledge that this disease can occur early in pregnancy and that its relationship with HCV infection is a key point for a prompt diagnosis, allowing taking timely appropriate therapeutic decisions, aimed at improving the fetal prognosis.

Descrevemos os casos de três pacientes com diagnóstico de colestase intra-hepática da gravidez de início precoce. Em dois deles o diagnóstico estava relacionado à infecção pelo vírus da hepatite C (VHC). Reconhecer que esta doença pode se manifestar precocemente na gravidez e sua relação com a infecção pelo VHC é fundamental para fazer um diagnóstico oportuno de ambas as doenças e assumir condutas terapêuticas adequadas, melhorando assim o prognóstico materno e fetal.

Humans , Female , Pregnancy , Adult , Pregnancy Complications, Infectious/diagnosis , Pruritus , Cholestasis, Intrahepatic/diagnosis , Cholestasis, Intrahepatic/etiology , Hepatitis C/complications , Pregnancy Trimester, Second , Pregnancy Trimester, First , Ursodeoxycholic Acid/therapeutic use , Chlorpheniramine/therapeutic use , Cholestasis, Intrahepatic/drug therapy , Hepatitis C/diagnosis , Early Diagnosis
Arq. neuropsiquiatr ; 79(10): 900-903, Oct. 2021. graf


Abstract Background: Pruritus is a common complaint in dermatology. Wartenberg, in 1943, associated pruritus with neuropathy, relating it to the "posterior antebrachial cutaneous nerve neuropathy". In 1968, Waisman described patients with frequent pruritus complaints in the upper limb during the summer, which he named "brachioradial summer pruritus". Currently, this pruritus is named brachioradial pruritus (BRP). BRP is characterized by a chronic pruritus, usually localized, with a long duration, and without apparent cutaneous abnormalities. Neurological disorders both from the central and peripheral nervous systems, including multiple sclerosis, are associated with pruritus. Objective: To investigate correlations between symptomatic dermatomes and alterations in the myotomes, as evidenced by electroneuromyography (ENMG). Methods: Forty-six patients with BRP dermatological diagnoses were subjected to upper limb ENMG. Results: Among 46 patients with C5 to C8 dermatomal pruritus, we evaluated 113 symptomatic dermatomal areas. Overall, 39 (85%) patients had radicular involvement and 28 (60%) had agreement between complaint and the ENMG findings (p=0.015). A total of 80% of the patients with complaints at C7 and 47% at C6 had radicular involvement at the same level. Conclusions: Among the patients who presented complaints, 47 and 80%, respectively, had ENMG alterations in the C6 and C7 myotomes. We conclude that peripheral nervous system involvement is associated with BRP.

RESUMO Antecedentes: O prurido constitui queixa frequente e desafiadora na prática dermatológica. O primeiro estudo a relacionar prurido com neuropatia foi de Wartenberg, em 1943, que associou à "neuropatia do nervo cutâneo antebraquial posterior". Em 1968, Waisman descreveu pacientes com queixas recorrentes de prurido em membros superiores no verão, sendo denominado, então, "brachioradial summer pruritus". Atualmente, esse prurido é denominado como prurido braquiorradial (PBR). O PBR é caracterizado por prurido crônico, geralmente bem localizado, de longa duração e sem anormalidades cutâneas aparentes. Doenças neurológicas, tanto centrais, esclerose múltipla ou acidente vascular cerebral como do sistema nervoso periférico, estão associadas a prurido. Objetivo: Investigar os dermátomos sintomáticos pela eletroneuromiografia (ENMG). Métodos: Foram estudados 46 pacientes com diagnóstico dermatológico de PBR com a eletroneuromiografia dos membros superiores. Resultado: Foram avaliados 46 pacientes com queixa dermatológica de C5 a C8 somando 113 áreas dermatoméricas sintomáticas. Observou-se que 39 (85%) pacientes apresentavam comprometimento radicular, sendo que em 28 (60%) houve concordância plena entre as queixas e os achados da ENMG (p=0,015), e que 80% dos pacientes com queixa em território de C7 e 47% em C6 apresentavam comprometimento radicular no mesmo nível. Conclusões: As queixas mais frequentes foram as correspondentes aos territórios de C6 e C7, sendo que 47 e 80%, respectivamente, apresentaram alteração na ENMG nesses miótomos. Dessa forma, evidenciou-se correlação entre comprometimento do sistema nervoso periférico (i.e., radicular) com PBR.

Humans , Pruritus , Peripheral Nervous System , Arm , Radiculopathy , Electromyography , Muscles , Nervous System Diseases
Arq. Asma, Alerg. Imunol ; 5(2): 203-207, abr.jun.2021. ilus
Article in English | LILACS | ID: biblio-1398933


Allergy to persimmon (Diospyros kaki ) has been only rarely reported. The antigenic composition of the fruit is not entirely known. Thaumatin-like proteins (TLPs) have been described as allergens in pollens and various fruits, such as kiwi and banana, but not in persimmon. We report the case of a 22-year-old man, with persistent moderate-to-severe allergic rhinitis, sensitized to house dust mites. The patient describes an episode of oral mucosa and ear canal pruritus, followed by diffuse urticaria, which rapidly evolved to dysphonia, dyspnea, and dizziness, after eating raw persimmon. A few months later he developed similar cutaneous symptoms accompanied by nausea, vomiting, abdominal colic, and hypotension immediately after the intake of banana. The prick-prick test with raw persimmon and banana were positive, as well as the serum specific IgE to the extract of these fruits. The ImmunoCAP ISAC_112i test demonstrated a positive specific IgE against Act d 2 (kiwi thaumatin), which is homologous to banana TLP (Mus a 4). Serum IgE inhibition test with "sponge" of Diospyros kaki ImmunoCAP (f301) showed partial inhibition (40%) of IgE to Act d 2. This raises the suspicion that a TLP is at least partially responsible for the referred sensitization. This patient is sensitized to Diospyros kaki and Musa acuminata. An anaphylactic reaction to consumed persimmon, presumably as a result from cross-allergy with banana thaumatin was diagnosed in our patient. Thaumatin has not been previously described as an allergen of persimmon with cross-reactivity with banana, and in vitro with Act d 2 (kiwi TLP).

A alergia ao caqui (Diospyros kaki ) tem sido raramente documentada, não sendo a composição antigênica da fruta totalmente conhecida. Proteínas semelhantes à taumatina (TLPs) foram descritas como alergênicos em pólens e várias frutas, como no kiwi e banana, mas não no caqui. Apresenta-se o caso de um doente de 22 anos, com rinite alérgica persistente moderadagrave, sensibilizado a ácaros do pó doméstico. O doente refere episódio de prurido na mucosa oral e canal auditivo, seguido de urticária generalizada, que rapidamente evoluiu para disfonia, dispneia e tontura, após ingestão de caqui. Poucos meses depois, desenvolveu sintomas cutâneos semelhantes, acompanhados de náuseas, vómitos, cólica abdominal e hipotensão imediatamente após ingestão de uma banana. O teste cutâneo por picada com caqui e banana em natureza foram positivos, bem como o doseamento de IgE específica. O teste ImmunoCAP ISAC_112i identificou a presença de IgE específica para Act d 2 (taumatina do kiwi), homóloga da TLP da banana (Mus a 4). O estudo de inibição ImmunoCAP ISAC com "esponja" de Diospyros kaki (f301) produziu uma inibição parcial (40%) da ligação de IgE a Act d 2, permitindo presumir que uma proteína semelhante à taumatina é, pelo menos, parcialmente responsável pela referida sensibilização. Este doente encontra-se sensibilizado a Diospyros kaki e Musa acuminata. Uma anafilaxia ao caqui ingerido, presumivelmente resultante de reatividade cruzada com a taumatina da banana foi diagnosticada. Não estão descritas na literatura TLPs como alergênicos do caqui com reatividade cruzada com a banana e com Act d 2 in vitro (TLP do kiwi).

Humans , Male , Young Adult , Diospyros , Musa , Eating , Rhinitis, Allergic , Fruit , Hypersensitivity , Anaphylaxis , Mites , Pruritus , Signs and Symptoms , Urticaria , Vomiting , Immunoglobulin E , Intradermal Tests , Allergens , Colic , Ear Canal , Mouth Mucosa , Nausea
Dermatol. argent ; 27(2): 69-71, abr-jun 2021. il, graf
Article in Spanish | LILACS, BINACIS | ID: biblio-1367271


El prurigo nodular crónico se caracteriza por un ciclo de prurito y excoriación en el que intervienen mecanismos neurodérmicos, asociado a diversas enfermedades. Se manifiesta con placas o nódulos hiperqueratósicos cupuliformes. El tratamiento, enfocado en reducir el prurito, representa un desafío por la frecuente resistencia a las terapéuticas habituales. Se describe el caso de un hombre de 72 años, con antecedentes psiquiátricos, que presentó una dermatosis pruriginosa recalcitrante refractaria a múltiples esquemas de tratamiento.

Chronic prurigo nodularis is characterized by a cycle of itching and excoriation involving neurodermal mechanisms, associated with various diseases. It manifests with cupuliform hyperkeratotic plaques or nodules. Treatment is focused on reducing itching and is a challengue due to the frequent resistance to the usual therapies. We present the case of a 72-year-old man with a psychiatric history, who presented a recalcitrant pruritic dermatosis refractory to multiple treatment regimens.

Humans , Male , Aged , Prurigo/diagnosis , Prurigo/pathology , Prurigo/drug therapy , Pruritus/diagnosis , Pruritus/drug therapy
An. bras. dermatol ; 96(1): 100-102, Jan.-Feb. 2021. graf
Article in English | LILACS | ID: biblio-1152791


Abstract Generalized eruptive keratoacanthoma of Grzybowski is a rare variant of multiple keratoacanthomas counting with about 40 cases reported. It is a chronic and progressive disease for which none of the described therapeutic options has been entirely satisfactory. We report a case of an 83-year-old female who presented with a 3-month history of extremely pruritic, multiple, skin-coloured to erythematous to brownish, millimetric papules, with a keratotic centre. Histological examination of an incisional biopsy was consistent with the diagnosis of keratoacanthoma. The patient started acitretin 25 milligrams daily with a complete resolution of pruritus and regression of numerous lesions.

Humans , Female , Aged, 80 and over , Exanthema , Keratoacanthoma , Pruritus/diagnosis , Pruritus/etiology , Pruritus/drug therapy , Skin , Acitretin/therapeutic use
Rev. int. sci. méd. (Abidj.) ; 23(1): 30-36, 2021. tables, figures
Article in French | AIM | ID: biblio-1397594


Introduction. Le prurit généralisé sine materia peut altérer la qualité de vie des patients. L'objectif de cette étude était d'en documenter les caractéristiques épidémiologiques, cliniques et étiologiques en dermatologie à Cotonou. Méthodes.Une étude rétrospective et descriptive a été réalisée dans le service de dermatologie du Centre National Hospitalier et Universitaire de Cotonou du 1er janvier 2009 au 31 décembre 2018. Elle a inclus tous les patients chez qui le diagnostic de prurit généralisé sine materia était retenu sur la base d'arguments cliniques. En cas d'orientation clinique, un examen paraclinique à visée étiologique était demandé. Résultats.La prévalence du prurit généralisé sine materia était de 1,2% (126 cas/10627 consultants). Les adultes jeunes de 31-50 ans (34,1%) et les sujets âgés de plus de 60 ans (15,1%) étaient les plus atteints. La sex-ratio était de 1,1. Le prurit était le plus souvent chronique (80,2%), d'intensité légère à modérée (83,3%), intermittent (71,4%) et sans horaire (77,8%). Les principales étiologies retrouvées étaient l'eau (32,5%), les savons irritants (30,2%), la xérose cutanée (18,3%), la sénescence (12,7%). Les maladies internes ont été retrouvées dans 28,6% des cas. Dans 4% des cas, aucune étiologie n'a été retrouvée. Conclusion. Le prurit généralisé sine materia en dermatologie à Cotonou était plus fréquent chez les adultes jeunes et les sujets âgés. Les étiologies étaient dominées par les facteurs environnementaux et les anomalies physiologiques cutanées.

Humans , Cosmetics , Short Interspersed Nucleotide Elements , Pruritus , Epidermolysis Bullosa Simplex
Acta Medica Philippina ; : 501-515, 2021.
Article in English | WPRIM | ID: wpr-987800


Background@#Pruritus can impair quality of life in patients with atopic dermatitis. There is evidence that acupuncture reduces pruritus and disease severity, and improves quality of life. @*Objectives@#This study aimed to determine the efficacy of acupuncture in reducing pruritus intensity, disease severity, and medication use, and improving quality of life. @*Methods@#This was a patient- and assessor-blinded, randomized, placebo-controlled trial. Patients diagnosed with atopic dermatitis underwent twice-weekly acupuncture for 12 weeks, with an 8-week follow-up period. Baseline and weekly assessment were done using standard data collection forms and validated assessment tools. @*Results@#Thirty patients were randomized and 28 patients were eligible for the efficacy analysis. There were no significant differences in the baseline demographic and clinical characteristics between the True Acupuncture group (TA) (n=16) and Sham Acupuncture group (SA) (n=12). Both groups showed reduction in mean itch intensity (visual analogue scale, VAS) (p=0.024) but TA showed greater reduction (p=0.009) that was sustained after end of treatment. There was also a reduction in medication use in both groups. The comparable efficacy of SA to TA is attributed to similar peripheral receptive fields and stimulation of cutaneous C-fibers which depletes the neurotransmitters mediating pruritus and results in tachyphylaxis. Mild adverse events, such as petechiae and erythema, were noted in both groups and resolved spontaneously. @*Conclusion@#Acupuncture is a promising adjunct treatment in atopic dermatitis with significant reduction in pruritus, disease severity and medication use and a trend towards improved quality of life. Studies with larger sample size and comparison to acupuncture points farther from the true acupuncture points are recommended. @*Trial Registration@#Food and Drug Administration Philippine Health Research Registry ID PHRR171012-001696

Acupuncture , Pruritus , Dermatitis, Atopic