Acrodermatitis continua of Hallopeau in a 47-year-old female

@#A 45-year-old female came to our clinic due to multiple pustules on her fingers. The lesions first appeared when she was 15 years old, starting as a few erythematous macules on her left thumb that eventually developed into painful pustules. The patient claimed that no relief was provided by analgesics and oral antibiotics. Over the next 11 years, the lesions on her left thumb gradually spread to all her fingers including those on her right hand, accompanied by the development of erosions, fissures, and scales, as well as intermittent joint pains and swelling. These symptoms remained unresponsive to multiple topical products, the names of which the patient could not recall. At 24 years old, the patient experienced onycholysis in the first to third digits of her left hand, which progressed to anonychia and eventually affected all the fingers in her left and right hands. When the patient was 38 years old, similar pustules, erosions, fissures, and scaling appeared on several toes. Due to increasing discomfort from lesions spreading to her toes, making it difficult to put on footwear, the patient sought consultation at our dermatology clinic. No symptoms related to pulmonary, gastrointestinal, and genitourinary systems were reported. The patient denied pain or immobility in other joints of her right hand, hair or scalp changes, and oral mucosal lesions. There was no family history of psoriasis, hypertension, peripheral arterial diseases, or other conditions with similar lesions. The patient denied any history of cigarette smoking, chronic alcohol intake, or illicit drug use. On physical examination, the patient appeared comfortable with no signs of distress. We observed multiple erythematous pustules, some coalescing into pus-filled lakes, and thick white hyperkeratotic plaques with scales located on the distal interphalangeal joints, extending to the tips of all digits on both hands. Similar pustules and plaques with scales were seen on the first metatarsophalangeal joint of the right foot and the first digit of the left foot, sparing only the patient’s palms and soles (Figure 1). Anonychia affected all fingers, and there was shortening of all digits on both hands. No hair changes, oral mucosal lesions, or lymphadenopathies noted. The rest of the physical examination findings were unremarkable. Based on the history and clinical findings, we initially assessed the patient as having a form of acropustulosis. Differential diagnoses included infections (e.g., herpetic whitlow, staphylococcal felon, candidal paronychia), which were ruled out due to finger involvement and lack of systemic symptoms. Malignant conditions (e.g., squamous cell carcinoma, acrometastasis) were excluded from the differential diagnoses due to the absence of other typical indicators like trauma, chronic paronychia, exposure to radiation or arsenic fumes, a history of cigarette smoking, or a primary tumor.1 2 Inflammatory conditions (e.g., dyshidrotic eczema, chronic hand contact dermatitis) were also ruled out due to the lack of prominent pruritus, burning sensation, and exposure to common irritants.3 4 Immune-mediated conditions (e.g., palmoplantar pustulosis, palmoplantar psoriasis) were considered but eventually ruled because the patient's lesions did not involve her palms and soles.4 At the time of our evaluation, the patient had normal results in hematology, lipid panel, and liver and kidney function tests. Radiography of the hands showed shortening of the distal phalanges on the first to third digits on both hands, good alignment of osseous structures, intact outlines and trabecular patterns, and normal joint spaces and soft tissue shadows. These findings are consistent with brachydactyly, frequently observed in cases of psoriasis manifesting with dactylitis. Gram stain of the pustules yielded negative results. Histopathology from a skin punch specimen taken from an erythematous plaque on the third digit of the left hand showed focal parakeratosis overlying a spongiotic epidermis with hypogranulosis and psoriasiform hyperplasia. The dermis showed superficial dermal edema and moderately dense perivascular inflammatory infiltrates composed predominantly of lymphocytes and some neutrophils (Figure 1). The final histopathologic impression was psoriasiform dermatitis, ruling out other possible differential diagnoses, including infectious, malignant, and inflammatory conditions. Given the histopathologic consistency with psoriasis, coupled with the clinical presentation of multiple pustules on the tips of the digits and nail changes, the clinicopathologic final diagnosis was acrodermatitis continua of Hallopeau. We initiated oral methotrexate at 10 mg/week for 3 weeks, followed by an increase to 15 mg/week for 7 weeks, reaching a cumulative dose of 135 mg. The patient also received oral folic acid 5 mg daily on days without methotrexate and topical clobetasol propionate 0.05% ointment applied twice daily with occlusion at night. We provided counseling and education about the chronic nature of her condition, emphasizing the need for follow-up every 3 to 6 months. Most pustules resolved, and no new lesions were observed during the tenth week of treatment. No adverse events were reported, and erythema and scaling were significantly lessened. Acrodermatitis continua of Hallopeau (ACH) is a rare form of localized pustular psoriasis characterized by recurrent chronic eruptions of sterile pustules, especially affecting the distal regions of the fingers and toes, and occasionally the nail beds.4 5 The pathophysiology remains poorly understood, but a few authors attribute it to mutations in the interleukin-36RN gene.6 7 8 Diagnosis of ACH can be established based on clinical features. Histopathologic examination and laboratory tests may be helpful in difficult cases, but they are not necessarily performed in all patients.4 6 9 ACH is associated with a wide range of differential diagnoses including infectious paronychia of viral, bacterial, or fungal etiology, dishydrotic eczema, and infected contact dermatitis.4 10 11 Rarely, osteitis and osteolysis of the phalanges may occur in persistent or severe cases.4 6 12 Due to its chronic and relapsing nature, long-term therapeutic control of ACH is necessary to prevent complications.<13 Cirone et al> ACH is recalcitrant to available therapies, with no clear management guidelines or drugs achieving lasting remission.5 Progression to severe disease with irreversible complications is common, and even with treatment, ACH often recurs, affecting patients' physical and psychological well-being.

Effectiveness of 100% tea tree oil (Melaleuca alternifolia) versus salicylic acid + lactic acid solution in the treatment of common warts: A randomized controlled trial

Background@#Common warts are a common malady among patients. Not only does it affect the person physically but also mentally and socially. Several treatment modalities are available; however, the major concerns are the treatment cost and adverse effect profile. Salicylic + lactic acid (SLA) solution is one of the standard treatment modalities owing to its strong keratolytic properties; however, its cost and adverse effects limit its use among patients. A cost-effective and safe alternative treatment is ideal to bring about a more favorable clinical outcome and better patient satisfaction. 100% tea tree oil (TTO) solution was used in this study due to its natural antiviral and anti-inflammatory properties.@*Objective@#The study aimed to compare the safety and effectiveness of 100% TTO versus SLA solution in the treatment of common warts.@*Methods@#A total of 17 patients with a total of 74 warts were included in the study. Each wart was assigned to either of the two treatment groups. the SLA group and the 100% TTO group. A treatment period of 6 weeks was used to assess the effectiveness of both treatment groups.@*Results@#The study showed no significant difference between the SLA solution and 100% TTO in the treatment of common warts. The 100% tea tree group reported lesser adverse effects. Both treatment groups reported favorable treatment satisfaction.@*Conclusion@#100% TTO is a potentially safe and cost-effective alternative in the treatment of common warts.

Teledermatology at a tertiary government hospital in Davao City during the COVID-19 pandemic: A retrospective descriptive study

@#<p style="text-align: justify;"><strong>INTRODUCTION:</strong> Telemedicine is the practice of remote consultations that utilize computer-mediated communication. Given the visual nature of dermatology, it is most well-suited to adopt telecommunication practices. This enables remote medical care during public health emergencies like the current COVID-19 pandemic; limiting the risk of exposure for both patients and doctors alike.</p><p style="text-align: justify;"><strong>OBJECTIVES:</strong> This study aimed to describe the demographic and clinical profile of teledermatology patients from April to August 2020. Data were also compared with face-to-face consultations during the same period in 2019 in order to establish whether telemedicine can be a viable and reliable substitute to face-to-face consultations during a pandemic.</p><p style="text-align: justify;"><strong>METHODS:</strong> We retrospectively analyzed chart data during a 5-month period in 2020; wherein the number of online consultations were observed to be the highest. We noted demographic and clinical features and compared some of these data to those obtained in the same period in 2019.</p><p style="text-align: justify;"><strong>RESULTS:</strong> A total of 1,632 patients were seen via teledermatology in 2020 versus 7,219 face-to-face patients in 2019. Mean age for both groups were 26.59 and 36.89 respectively. Most patients in both years were from Davao. However, there was an increase in consults from other regions in 2020. Overall, the majority of cases for both periods were non-urgent inflammatory conditions.</p><p style="text-align: justify;"><strong>CONCLUSION:</strong> This study showed that providing remote dermatologic care is now possible with the advent of technology even during a pandemic. Teledermatology may serve as an effective adjunct to traditional consultations.</p><p style="text-align: justify;"><strong>KEYWORDS:</strong> telemedicine, dermatology, COVID-19, pandemic</p>

Acral Lentiginous Melanoma treated by wide excision with split-thickness skin graft: Case in images

@#Acral lentiginous melanoma (ALM) is the rarest of the four subtypes of cutaneous melanoma.1 It accounts for only 2-8% of melanomas in caucasians.2 Only 52 cases of ALM have been recorded in the Philippine Dermatological Society Health Information System from 2011 to 2016.3 Histopathologic demonstration of cytologic atypia, presence of mitoses in the deep dermis, pagetoid spread of epidermal melanocytes and lack of maturation of nests with descent into the dermis are features diagnostic of melanoma.2 4 ALM is primarily managed through wide surgical excision. The most common sites for ALM are the soles, palms, and subungual areas.2 The rarity of ALM, the inconspicuousness of the locations of some lesions, and the difficulty in discerning ALM from benign lesions and traumatic changes usually delay the diagnosis and contribute to the poor prognosis of the disease.4 5 6 A 53-year-old male consulted us for an enlarging pigmented plaque on the sole of his left foot. The lesion started as a junctional nevus, which the patient had since birth. The nevus, originally measuring approximately 0.5 x 0.5 cm, started to increase in size one year prior to the consultation. One month before consultation, the patient noted a black nodule on the center of the lesion. A week before consultation, the lesion bled and became painful after manipulation by the patient. Dermatologic examination of the plantar aspect of the left foot revealed a 1.7 x 1.6 cm, dark brown-black, asymmetric plaque with cobblestone-like surface and a black indurated nodule on the center (Figure 1A). Dermoscopic findings of bluish white veil and irregular pigmentation with variable hypopigmented blotches are suggestive of acral melanoma (Figure 1B). Skin punch biopsy and immunohistochemical stains for S100, Melan A, HMB-45, and KI-67 confirmed the diagnosis of ALM (Figure 2, 3). We did a wide local excision of the lesion with a 2-cm margin from the tumor edge, with depth up to the suprafascial level (Figure 4A). The excisional defect was repaired with a split-thickness skin graft taken from the patient’s skin on the right thigh (Figure 6), which provided excellent aesthetic result. We also did a sentinel lymph node biopsy on the left inguinal area (Figure 5A,B). Frozen section biopsy showed solid nests of atypical melanocytes invading the surrounding fibrous stroma. Individual cells exhibit round to oval, deeply basophilic nuclei and abundant, clear to eosinophilic cytoplasm. Some areas showed prominent melanin pigmentation. Sections along lines of resection, lymphovascular channels, nerves and adipose tissues of the excised mass (Figure 4 B,C) and lymph nodes from sentinel biopsy were all devoid of malignant tumor cells. Histopathologic findings from frozen section biopsy and permanent section biopsy were both consistent with malignant melanoma with 3 mm Breslow thickness. The patient’s postoperative course, including wound healing, was uneventful (Figure 7). During the patient’s 12-month follow up period, we did not observe any signs of local or distant recurrence of the tumor.

Acral Lentiginous Melanoma treated by wide excision with split-thickness skin graft: Case in images

@#Acral lentiginous melanoma (ALM) is the rarest of the four subtypes of cutaneous melanoma.1 It accounts for only 2-8% of melanomas in caucasians.2 Only 52 cases of ALM have been recorded in the Philippine Dermatological Society Health Information System from 2011 to 2016.3 Histopathologic demonstration of cytologic atypia, presence of mitoses in the deep dermis, pagetoid spread of epidermal melanocytes and lack of maturation of nests with descent into the dermis are features diagnostic of melanoma.2 4 ALM is primarily managed through wide surgical excision. The most common sites for ALM are the soles, palms, and subungual areas.2 The rarity of ALM, the inconspicuousness of the locations of some lesions, and the difficulty in discerning ALM from benign lesions and traumatic changes usually delay the diagnosis and contribute to the poor prognosis of the disease.4 5 6 A 53-year-old male consulted us for an enlarging pigmented plaque on the sole of his left foot. The lesion started as a junctional nevus, which the patient had since birth. The nevus, originally measuring approximately 0.5 x 0.5 cm, started to increase in size one year prior to the consultation. One month before consultation, the patient noted a black nodule on the center of the lesion. A week before consultation, the lesion bled and became painful after manipulation by the patient. Dermatologic examination of the plantar aspect of the left foot revealed a 1.7 x 1.6 cm, dark brown-black, asymmetric plaque with cobblestone-like surface and a black indurated nodule on the center (Figure 1A). Dermoscopic findings of bluish white veil and irregular pigmentation with variable hypopigmented blotches are suggestive of acral melanoma (Figure 1B). Skin punch biopsy and immunohistochemical stains for S100, Melan A, HMB-45, and KI-67 confirmed the diagnosis of ALM (Figure 2, 3). We did a wide local excision of the lesion with a 2-cm margin from the tumor edge, with depth up to the suprafascial level (Figure 4A). The excisional defect was repaired with a split-thickness skin graft taken from the patient’s skin on the right thigh (Figure 6), which provided excellent aesthetic result. We also did a sentinel lymph node biopsy on the left inguinal area (Figure 5A,B). Frozen section biopsy showed solid nests of atypical melanocytes invading the surrounding fibrous stroma. Individual cells exhibit round to oval, deeply basophilic nuclei and abundant, clear to eosinophilic cytoplasm. Some areas showed prominent melanin pigmentation. Sections along lines of resection, lymphovascular channels, nerves and adipose tissues of the excised mass (Figure 4 B,C) and lymph nodes from sentinel biopsy were all devoid of malignant tumor cells. Histopathologic findings from frozen section biopsy and permanent section biopsy were both consistent with malignant melanoma with 3 mm Breslow thickness. The patient’s postoperative course, including wound healing, was uneventful (Figure 7). During the patient’s 12-month follow up period, we did not observe any signs of local or distant recurrence of the tumor.