Observation on the therapeutic efficacy of thread hanging combined with cotton plug in the treatment of stage Ⅲ paronychia / 中国热带医学

@#Abstract: Objective To observe the curative effect of thread-hanging combined with cotton plug on stage Ⅲ paronychia. Methods Sixty-one patients with stage Ⅲ paronychia were selected and randomly divided into a treatment group and a control group. The treatment group (n=31) was treated with thread-hanging and tampon under local infiltration anesthesia, and changed dressing and tampon every day after operation. After the wound healed, the patient soaked his feet in warm water every day and changed the tampon himself until the symptoms subsided, and the knot did not receive special treatment, and the nail plate would naturally shed as it outgrew the paronychia. The control group (n=30) was treated with thread-hanging and nail groove reconstruction under nerve block anesthesia, and the dressing was changed every day after operation. After thread removal, the patients soaked their feet in warm water every day until the symptoms subsided, and the knot was not specially treated, and it naturally fell off with the growth of the deck beyond the nail groove. The postoperative Visual Analog Scale (VAS) pain score, pain duration, wound healing time, cure rate, effective rate and recurrence rate of paronychia, and patients' satisfaction with the operation were compared between the two groups. Results Compared with the control group, the treatment group had lower VAS pain scores on the first and third postoperative days (2.1±0.3) and (0.2±0.1) vs. (6.3±0.1) and (3.2±0.2), respectively, shorter duration of pain and wound healing time (3.3±0.3) days and (10.1±0.5) days vs. (5.2±0.3) days and (15.2±0.3) days, respectively, higher cure rate (87.1% vs. 66.7%), lower failure rate (12.9% vs. 33.3%), lower recurrence rate (7.4% vs. 20.0%), and higher patient satisfaction (97.0% vs.75.3%). The treatment group showed significant superiority over the control group in all outcomes. Conclusion For patients with stage Ⅲ paronychia, thread-hanging combined with cotton tampon without nail groove reconstruction is advantageous as it avoids additional skin trauma, and does not affect the nail appearance and normal periungual barrier after healing, , reduces patient discomfort, and shortens the time off work, resulting in a higher cure rate. This treatment approach is therefore worth promoting in clinical practice.

Risk factors for poorly controlled and recurrence-prone ingrown toenails treated with nail braces: A retrospective observational study of 238 cases

Background: Nail braces are reportedly effective for treating both acute inflamed and chronic dystrophic type ingrown toenails. Aims: In this study, risk factors for poorly controlled and recurrence-prone ingrown toenails treated with nail braces were identified. Methods: We performed a retrospective study on patients with ingrown toenails between June 1, 2015, and May 31, 2018. The last follow-up date was January 31, 2019. Multivariate logistic regression was performed to evaluate the possible factors associated with poorly controlled status (ongoing paronychia during treatment) and recurrence. Results: There were 120 (244 sides) and 118 patients (167 sides) with chronic dystrophic and acute inflamed type ingrown toenails, respectively. The mean treatment duration and follow-up period were 161.2 ± 98.3 days and 432.7 ± 320.9 days, respectively. Poor control and recurrence were seen in 7.3% (17/232) and 12.2% (27/221) of the patients, respectively. In the multivariate analysis, acute inflamed ingrown toenails, previous nail avulsion, proximal nail fold hypertrophy and more than one affected side remained significantly associated with poorly controlled ingrown toenails. Foot bone deformity was significantly associated with recurrence. Limitations: This study was a retrospective study so that confounding factors such as comorbidities, body mass index, accompanying nail changes and lifestyle could not be evaluated. Conclusion: Several risk factors related to poor control and recurrence were identified. Patients could therefore benefit from more suitable treatment plans with reasonable expectation.

Tampon tamponade combined with wedge resection of the nail folds for the treatment of ingrown toenail-induced paronychia: a clinical observation / 中华皮肤科杂志

Objective:To evaluate clinical effect of tampon tamponade combined with wedge resection of the nail folds in the treatment of ingrown toenail-induced paronychia.Methods:A total of 96 patients with ingrown toenail-induced paronychia were collected from Department of Emergency Medicine, General Hospital of Ningxia Medical University between August 2017 and April 2019, and randomly and equally divided into 2 groups by using a random number table: control group treated surgically with the Winograd method, and treatment group treated with tampon tamponade combined with wedge resection of the nail folds. All the patients were followed up for 6 - 23 months after surgery.Results:Six months after operation, 47 (97.92%) and 41 (85.42%) cases were cured in the treatment group and control group respectively, and the cure rate significantly differed between the 2 groups ( χ2 = 4.909, P < 0.05) . The visual analogue scale scores for pain were significantly lower in the treatment group than in the control group on day 3 and 1 month after operation (both P < 0.05) . The postoperative recurrence rate and infection rate were 0 and 2.08% in the treatment group respectively, which were significantly lower than those in the control group (6.25%, 12.5%, respectively, both P < 0.05) . Conclusion:Tampon tamponade combined with wedge resection of the nail folds is effective for the treatment of ingrown toenail-induced paronychia with a simple operative procedure and a low postoperative recurrence rate, and is worthy of clinical promotion.

Retronychia

Abstract: Retronychia is a recently described disorder caused by ingrowth of the proximal nail plate into the proximal nail fold. It is suspected when there is persistent paronychia, particularly in the setting of trauma. This disease is probably underdiagnosed due to limited knowledge among dermatologists and the presence of incomplete clinical forms. Nail plate avulsion is the diagnostic and curative procedure of choice, despite reports of relapse.

Paronychia: incidence during Magh Mela

Background: Prevalence of complications in malaria continues to grow even with reducing number of malaria cases. Complications associated with malaria can involve multiple organs. There is paucity of literature on factors associated with multi organ dysfunction in different types of malaria.Methods: Our aim was to study the clinical profile of complications in different types of malaria with specific focus on multi-organ dysfunction (MODS). In this cross-sectional study confirmed cases of malaria were enrolled.Results: Plasmodium vivax malaria was the predominant type seen in 74.1% cases. The overall prevalence of thrombocytopenia was 61.5%, hepatic dysfunction 58%, cerebral malaria 16.1%, Hypoglycemia 7.5%, bleeding 34.5%, acute respiratory distress syndrome (ARDS) 5.7% and acute kidney injury (AKI) 49.4%. Hypoglycemia was significantly higher in mixed malaria (0.025, p = 0.025). Hepatic dysfunction and hyperbilirubinemia were significantly higher in mixed malaria (p=0.001). Mortality was seen in mixed malaria (p = 0.007). Only those with mixed malaria died (13%). Patients with MODS had higher prevalence of rashes (p <0.0001) and cerebral malaria (p = 0.000). Serum levels of urea, creatinine, Bilirubin, Serum glutamic oxaloacetic transaminase (SGOT) and Serum glutamic pyruvic transaminase (SGPT) were significantly higher in patients with MODS (p<0.0001 for all variables). On evaluating factors associated with multi-organ dysfunction presence of cerebral malaria [OR: 6.4 (95% CI): 2.4 to 17.4; p<0.0001], type of malaria (Vivax or Falciparum or both) [1.77 (1.03 to 3.03); p=0.0038], and hypoglycemia [4.4 (1.08 to 17.8); p=0.038] were statistically significant on multivariate analysis.Conclusions: The present study demonstrates the factors associated with multi organ dysfunction and its impact on clinical outcome in different types of malaria.

Nail changes in autoimmune blistering disorders: A case-control study

Background: Pemphigus and pemphigoid disorders produce blistering cutaneous lesions. Earlier case reports state that nail involvement is uncommon in these autoimmune blistering disorders. Aims and Objectives: To study nail changes in autoimmune blistering disorders. Methods: A case-control study was conducted where 40 cases and 40 controls were evaluated for nail changes. Results: Nail changes were seen in 72.5% of cases and 17.5% of controls. The most common nail findings were paronychia and onychorrhexis. Limitations: Small sample size; short study duration; nail biopsy could not be done. Conclusion: Our findings indicate that the inflammatory nature of the blistering cutaneous disease is often reflected conspicuously in the nails.

Periungual tegumentary leishmaniasis: a diagnostic challenge

Abstract: Periungual and paronychia-like skin lesions can mimic various diseases, setting up a diagnostic challenge that invariably requires correlation with complementary tests. We report a case of an ulcerated tumor of the nailfold diagnosed as leishmaniasis. Although paronychia-like cutaneous leishmaniasis is a rare variant, its epidemiological relevance in Brazil should prompt dermatologists to include it as a plausible diagnosis thus leading to correct work up and treatment.

Keli-Paoxi power for the treatment of acute paronychia / 国际中医中药杂志

Objective To evaluate the curative effect of Keli-Paoxi power for the treatment of acute paronychia. Methods A total of 144 patients with acute paronychia were randomly divided into a Keli-Paoxi power group, a mupirocin ointment group and an ethanol soaking group, 48 in each group. All patients were treated for 3 weeks and followed-up for 2 months. The time to regression of redness and swelling in the nail groove was recorded. The Visual Analogue Scale (VAS) was used to assess tenderness. The curative effects were evaluated, and recurrence of paronychia was recorded. Results The time to regression of redness and swelling in the nail groove in the Keli-Paoxi power group (2.2 ± 0.6 d) was significantly shorter than that in the mupirocin ointment group (8.1 ± 1.7 d) or ethanol soaking group (7.9 ± 1.2 d; F=344.597, P<0.01). The VAS Scores in the Keli-Paoxi power group (1.2 ± 0.2) was significantly lower than that in the mupirocin ointment group (3.2 ± 0.3) or ethanol soaking group (3.1 ± 0.3; F=831.273, P<0.01). The total effective rate in the Keli-Paoxi power group (100.0%, 48/48) was significantly higher than that in the mupirocin ointment group (83.3%, 40/48) or ethanol soaking group (81.3%, 39/48; χ2=9.700, P=0.008). The recurrence rate of paronychia in the Keli-Paoxi power group (2.1%, 1/48) was significantly lower than that in the mupirocin ointment group (16.7%, 8/48) or ethanol soaking group (14.6%, 7/48; χ2=6.000, P=0.049) at 2 months follow-up. Conclusions Keli-Paoxi power can alleviate tenderness, shorten the time to regression of redness and swelling in the nail groove, decraese recurrence in patients with acute paronychia. The curative effect of Keli-Paoxi power is superior to mupirocin ointment and ethanol soaking in the treatment of acute paronychia.

Surgical treatment of ingrown toenail and paronychia with lateral toe incision / 中华整形外科杂志

Objective@#To investigate and compare the advantages of surgical treatment of ingrown toenail with the traditional Winograd method.@*Methods@#From Aug. 2013 to Jun. 2015, 77 cases (89 toes) with 15-58 years were involved in the study. 37 cases (42 toes) were treated with Winograd method and other 40 cases (47 toes) were treated with a method using lateral incision without cutting the nail fold. The time of returning to normal activities, infection rate, recurrence rate, pain VAS score and shape satisfaction VAS score were evaluated to display the aesthetic and functional result of the both methods.@*Results@#All patients were followed up with an average of 8.6 months. The patients treated with the novel method returned to normal activities after (5.3±0.5) d post-surgery, which was much shorter than that (7.3±0.6) d in patients with the Winograd method (P<0.05). And the infection rate in the lateral incision group was also lower than that in the Winograd method group (P<0.05). At 3 days post-surgery, the pain VAS score in Winograd method group was higher (P<0.05), but the difference of pain VAS score disappeared after 1 and 6 months post-surgery (P>0.05). The shape satisfaction VAS score were 9.2±0.6 in the lateral incision group and 7.1±0.7 in the Winograd group, showing significant difference (P<0.05).@*Conclusions@#The lateral incision method without incising the nail fold reserves the nail groove and brings faster recovery to normal activities with less pain, lower infection rate and more satisfactory toenail shape.

Recommendations on treatment of nail and fingertip injuries in children. Cases series and literature review / Recomendaciones de tratamiento en lesiones de la uña y punta de los dedos en la infancia. Serie de casos y revisión

Abstract Introduction: Nail and fingertip injuries in children are very frequent and may range from a simple nail or fingertip injury to amputations. Objective: To present a series of cases with their clinical and demographic characteristics and to describe the current concepts for the treatment of these injuries. Materials and methods: A series of cases presenting fingertip injuries was analyzed for six months. Epidemiology of injuries is described and the current concepts of their treatment are reviewed. Results: 60% of the injuries analyzed in this study occurred in male subjects; 88% of patients suffered crush injuries, the nail was affected in 98% of the cases, sterile matrix damage was observed in 64% and germinal matrix damage was experienced in 34% of the cases. The soft tissue around the finger was affected in 40% of the cases and associated fractures were observed in 55% of the cases. Conclusion: Fingertip crush caused by closing doors was the most frequent injury, which implied a higher involvement of the nail. An adequate treatment focused on the anatomic repair of the nail bed, the relocation of the nail plate and, in some cases, the use of flaps to cover defects in the soft tissue is ideal for this type of injuries, and must be provided as fast as possible to avoid secondary deformities.

Resumen Introducción. En niños, son frecuentes las lesiones de la uña y de la punta de los dedos; estas varían desde traumas en la uña y el pulpejo hasta amputaciones. Objetivos. Describir una serie de casos con sus características clínicas y demográficas y exponer el estado actual del tratamiento de estas lesiones. Materiales y métodos. Se analiza una serie de casos con lesiones de punta de dedo durante seis meses. Se describe la epidemiología y se revisa el estado actual de tratamiento. Resultados. El 60% de las lesiones evaluadas se presentaron en varones, 88% tuvieron trauma por aplastamiento, 98% compromiso de la uña, 64% afectación en la matriz estéril, 34% en la matriz germinal y 40% en el pulpejo; 55% de los casos sufrieron fracturas asociadas. Conclusiones. La lesión por aplastamiento fue lo más frecuente, con mayor compromiso de la uña, predominando la contusión por cierre de puertas. Un buen tratamiento enfocado en la reparación anatómica de la matriz ungueal, reposición de la uña y, en algunos casos, uso de colgajos para cubrir los defectos en el pulpejo es el procedimiento ideal para este tipo de lesiones y debe hacerse rápidamente para evitar deformidades secundarias.

Paronychia and granulation tissue formation during treatment with isotretinoin

Abstract This paper describes the association of two unusual side effects of treatment with isotretinoin for severe acne: paronychia and excess granulation tissue in the nails furrows. We report a case of male patient aged 19 years, who in the course of the 36th week of treatment with isotretinoin for acne grade III showed erythema, edema, excess granulation tissue and onychocryptosis in various nail beds of hands and feet, with no history of trauma associated. A literature review revealed few reports of these adverse events, and two clinical patterns of exuberant granulation tissue has been described: one in periungual location and other in lesions of previous acne. The rarity and lack of knowledge on the best treatment for granuloma-like reactions make this theme a considerable challenge.

Nursing of paronychia caused by Erlotinib therapy for advanced non-small-cell lung cancer patients / 中国实用护理杂志

Objective To explore the nursing interventions of paronychia caused by Erlotinib therapy for advanced non-small-cell lung cancer patients. Methods A total of 78 patients who diagnosed as advanced non-small-cell lung cancer and treated by oral Erlotinib were selected. The occurrence of paronychia among them was observed and the curative effect of certain nursing interventions on paronychia was evaluated. Results Seven out of 78 cases occurred various degrees of paronychia,and certain nursing interventions could effectively prevent and treat paronychia. Conclusions Targeted drug Erlotinib in patients with advanced non-small cell lung cancer can cause adverse reactions like paronychia,but effective nursing interventions are capable of controlling the adverse reactions, thus further improve the quality of life and ensure the smooth progress of treatment.

Evaluation of role of Candida in patients with chronic paronychia.

Background: Chronic paronychia, earlier considered to be an infection due to Candida, is currently being considered as a dermatitis of the nail fold. Irritant, allergic and protein contact dermatitis are the suggested major pathogenic mechanisms. Hypersensitivity to Candida is more likely to be the etiology, rather than the infection itself. Aims: To assess the clinico‑etiological profiles of patients with chronic paronychia and to determine the role of contact sensitization and hypersensitivity to Candida. Methods: All consecutive patients of chronic paronychia attending the dermatology outpatient department (OPD) were assessed for risk factors, number of nails affected, clinical presentation and presence of fungus, patch tested for contact allergy and prick tested for hypersensitivity to Candida allergen. Results: A total of 80 patients of chronic paronychia were recruited into our study. There was female preponderance (66 patients, 82.5%), with the most common group affected being housewives (47 patients, 58.8%). Frequent washing of hands (64 patients, 80%) was the most common risk factor. Fungal culture was positive in 56.1% (41 patients), the predominant species cultured was Candida albicans (15 patients, 36.5%). Patch testing with Indian standard series was positive in 27.1% patients (19 out of 70 patients tested), with nickel being the most common allergen. Prick test with Candida allergen was positive in 47.6% patients (31 out of 65 patients tested). Limitations: Prick test and patch test provide indirect evidence of hypersensitivity, with inherent limitations. Conclusion: Our study shows that chronic paronychia is probably a form of hand dermatitis associated with prolonged wet work, and that there is a higher incidence of contact sensitization and Candida hypersensitivity in these patients.

Onicólisis exudativa y paroniquia bacteriana aguda en relación con BIBF-1120 y paclitaxel: respuesta a la terapia tópica / Exudative onycholysis and acute bacterial paronychia related to BIBF-1120 and paclitaxel: response to topical therapy

Se presenta el caso de una paciente de 50 años de edad con cáncer de mama tratada con paclitaxel y BIBF 1120 semanal. La paciente desarrolló al final del duodécimo ciclo de quimioterapia una onicólisis distal, con exudado seroso intenso en el hiponiquio, dolor y mal olor en todas las uñas de las manos. Se trató con ácido fusídico tópico y aceponato de metilprednisolona al 1% dos veces al día, con una excelente respuesta desde los tres primeros días de tratamiento. A la semana de iniciar la terapia tópica, se observó una paroniquia bacteriana con la pérdida de la uña del quinto dedo de la mano izquierda, con cultivos positivos para Staphylococcus aureus sensible a meticilina. Hay pocos casos publicados de onicólisis exudativa asociada a quimioterapia. Sin embargo, están especialmente relacionados con paclitaxel. No se observaron recurrencias de las alteraciones ungueales semanas después de culminar la quimioterapia. Los corticoides tópicos y el ácido fusídico podrían ser considerados como una opción terapéutica cuando la onicólisis exudativa relacionada con paclitaxel esté establecida.

A case of a 50 years-old breast cancer patient treated with weekly paclitaxel and BIBF 1120 is reported herein. At the end of the twelfth cycle of chemotherapy, the patient developed distal onycholysis with intense hyponychium serous exudates, pain and malodor in all her fingernails. It was treated with topical fusidic acid and 1% methylprednisolone aceponate two times daily, with an excellent clinical response from the first three days of treatment. Bacterial paronychia with nail plate loss of the fifth left fingernail was observed a week after the topical therapy was started, with positive cultures for Methicillin susceptible Staphylococcus aureus. There are few reported cases of exudative onycholysis associated with chemotherapy. However, these are especially related to paclitaxel. No recurrences of nail disturbances were observed weeks after the end of chemotherapy. Topical corticosteroids and fusidic acid could be considered as a therapeutic option when exudative onycholysis related to paclitaxel is established.

A Case of Chronic Paronychia Accompanied by Cutaneous Ossification / 대한피부과학회지

Cutaneous bone formation may be primary or secondary. If it is primary, there are no preceding cutaneous lesions. If it is secondary, bone forms through metaplasia within a preexisting lesion caused by inflammation, traumatic injury, and a neoplastic tumor. Paronychia is inflammation of the proximal nail fold and presents as painful periungual erythema, sometimes with associated purulence. Chronic paronychia is most commonly related to mechanical or chemical factors. Here, we report a case of chronic paronychia accompanied by cutaneous ossification in a 33-year-old woman who presented with a 2-year history of recurrent paronychia on the left first finger.

Acompanhamento a longo prazo de pacientes submetidos a cirurgia de paroníquia crônica / Long-term follow-up of patients who underwent surgery for chronic paronychia

Introdução: A paroníquia crônica é doença inflamatória da dobra ungueal proximal, geralmente presente por mais de seis semanas. O tratamento cirúrgico está indicado nos casos resistentes ao tratamento clínico e tem como objetivo a retirada da prega ungueal proximal. Objetivo: O objetivo deste trabalho foi analisar a manutenção da resposta ao tratamento cirúrgico da paroníquia crônica a longo prazo. Métodos: Estudo de coorte prospectivo no qual foram convocados 62 pacientes que haviam realizado tratamento cirúrgico para correção de paroníquia crônica no período de novembro de 2004 a abril de 2008. Os pacientes foram convocados a retornar ao serviço para reavaliação clínica e observação da presença ou não de sinais de paroníquia crônica e divididos em dois grupos: curados e não curados. Resultados: Dos pacientes convocados, 12 compareceram à reavaliação clínica, totalizando 31 procedimentos. A média de tempo do seguimento dos pacientes foi de cinco anos e dois meses e houve manutenção do resultado em 27 (87%) dos procedimentos realizados. Conclusões: A cirurgia de remoção da dobra ungueal proximal constitui boa opção para o tratamento de paroníquia crônica, sendo simples, eficaz e duradoura.

Introduction: Chronic paronychia is an inflammatory disease of the proximal nail fold that usually lasts for more than six weeks. Surgical of removal the proximal nail fold is recommended in cases that are resistant to clinical treatment. Objective: To analyze the long-term response to the surgical treatment of chronic paronychia. Methods: Prospective cohort study of 62 patients who had undergone surgical treatment to correct chronic paronychia from November 2004 to April 2008. The patients were asked to return for reassessment and clinical observation of the presence or absence of signs of chronic paronychia and were classified into two groups: cured and uncured. Results: Of the 62 patients, 12 attended the clinical reassessment, for a total of 31 procedures for analysis. The average length of patient follow-up was 5 years and 2 months. The results were maintained in 27 (87%) of the procedures performed. Conclusions: Surgical removal of the proximal nail fold is a good option for the treatment of chronic paronychia due to its simplicity, effectiveness, and long-lasting results.

Nail avulsion: Indications and methods (surgical nail avulsion).

The nail is a subject of global importance for dermatologists, podiatrists and surgeons. Nail avulsion is a frequently undertaken, yet simple, intriguing procedure. It may either be surgical or chemical, using 40% urea. The former is most often undertaken using the distal approach. Nail avulsion may either be useful for diagnostic purposes like exploration of the nail bed, nail matrix and the nail folds and before contemplating a biopsy on the nail bed or for therapeutic purposes like onychocryptosis, warts, onychomycosis, chronic paronychia, nail tumors, matricectomy and retronychia. The procedure is carried out mostly under local anesthesia with or without epinephrine (1:2,00,000 dilution). Besides the above-mentioned indications, the contraindications and complications of nail avulsion are briefly outlined.

Bacteriological Study of Paronychia in Military Personnel / 대한의진균학회지

BACKGROUND: Paronychia is a common infectious disease affecting fingernails and toenails. Although bacterial and fungal infections as well as mechanical trauma may play roles in the pathogenesis of this disease, there are few bacteriological studies about paronychia in military personnel. OBJECTIVE: To identify the causative bacteria of paronychia in military personnel. METHODS: We retrospectively analyzed the microbiological results of 145 patients who visited a tertiary referral hospital for Korean soldiers from August 2004 to October 2006. RESULTS: Twenty-eight different types of aerobic bacteria were identified, with the most common being Staphylococcus aureus (38.0%), Streptococcus pyogenes (7.2%), and Pseudomonas aeruginosa (5.4%). Staphylococcus aureus was identified mostly in finger and toe paronychial lesions and Pseudomonas aeruginosa was recovered commonly from toe paronychial lesions. All cases of paronychia were controlled by the combination of antiseptic dressing, topical antibacterial ointment, oral antibiotics, and antimycotic agents. CONCLUSION: The types of bacteria that most commonly caused paronychia in military personnel were Staphylococcus aureus, Staphylococcus pyogenes, and Pseudomonas aeruginosa. Thus, the commonly used oral antibiotics for paronychia, such as amoxicillin-clavulanate, clindamycin, and trimethoprim-sulfamethoxazole, are good choices in the treatment of paronychia in military personnel.

A Case of Onychia and Paronychia by Staphylococcus lugdunensis / 대한피부과학회지

Staphylococcus lugdunensis is part of the normal human skin flora and has the ability to establish primary infection in deep skin and vascular infections. A 41-year-old male presented with brittle, thick, crusted right thumb nail with yellow to brown discoloration and erythematous edema around the nail fold. We identified S. lugdunensis by bacterial culture for the pus. The lesion was improved after 2 months treatment of oral cefditoren and clarithromycin. We report a case of onychia and paronychia caused by S. lugdunensis.

Retronychia, a Proximal In-growth of the Nail Plate / 대한피부과학회지

Retronychia is a process of a nail embedding itself into the proximal nail fold due to an incomplete shedding of the nail, and this usually occurs after physical trauma. Retronychia causes persistent paronychia and defective nail growth on the patients. Simple avulsion of the superimposed nail is curative. A 17-year-old man presented with tender erythema and swelling on the proximal nail fold of the right 3rd and 4th fingers for 2 months after an operation that was performed due to metacarpal bone fracture. The second patient was a 25-year-old male who presented with a 1-month history of persistent paronychia on his right great toe after blunt trauma. For both patients, simple avulsion of the damaged nail was curative and underlying new nails were revealed. We report here on two cases of retronychia that could be easily overlooked and such cases have not been previously reported in the Korean dermatologic literature.