Orange-brown Chromonychia with Features of Splinter Hemorrhage on Dermoscopic Findings / 대한피부과학회지

Kawasaki disease is an acute inflammatory syndrome affecting middle-sized arteries. It is diagnosed when a fever lasts longer than 5 days, and four out of the five diagnostic criteria are satisfied. Some skin lesions are not included in the criteria, but are associated with Kawasaki disease. They can be helpful when the patient has an incomplete presentation. Herein, we report a Kawasaki patient who presented with simultaneous orange-brown chromonychia on all 20 nails and black crusted lips.

A Case of Sitagliptin Induced DRESS Syndrome / 대한피부과학회지

Drug reaction with eosinophilia and systemic symptoms (DRESS) syndrome is an adverse drug reaction that is difficult to predict. It is characterized by fever, skin rash, and internal organ involvement that usually manifests 2∼6 weeks after use of the culprit drug. The antihyperglycemic agent sitagliptin is commonly used for treating diabetes mellitus, and sitagliptin-induced DRESS syndrome has not been previously reported in Korea. Herein, we report a case of DRESS syndrome after sitagliptin use; these observations may contribute to the timely diagnosis of sitagliptin induced DRESS syndrome and help reduce associated complications or morbidities.

A Case of B Cell Pseudolymphoma in an Infant Showing Disseminated Papular Distribution / 대한피부과학회지

Cutaneous pseudolymphoma is a heterogeneous group of benign reactive T- or B-cell lymphoproliferative diseases of the skin that simulate cutaneous lymphomas histologically and, sometimes, clinically. Thus far, only a few cases of pseudolymphomas showing atypical clinical manifestations have been reported. A 10-month-old boy presented with multiple flesh-colored, yellowish erythematous disseminated papules on the face, abdomen, and arms. The cutaneous lesions morphologically resembled molluscum contagiosum, Langerhans cell histiocytosis, or juvenile xanthogranuloma. Punch biopsy and immunohistochemistry studies were performed, and the lesion was identified as a cutaneous B-cell pseudolymphoma. Most of the lesions were cleared within a month with systemic corticosteroids and oral antihistamine administration. In this report, we present an interesting rare case of infantile cutaneous B-cell pseudolymphoma mimicking many other dermatological diseases in addition to a cutaneous lymphoma.

Cutaneous Plasmacytosis Showing a Neuronal Involvement in a 35-Year-Old Female

No abstract available.

Facial Herpes Zoster: A 15-year Retrospective Single-Center Study / 대한피부과학회지

BACKGROUND: Many studies about herpes zoster exist in the Korean dermatologic literature. However, few studies have reported about facial herpes zoster and its complications. OBJECTIVE: The purpose of this study was to investigate the epidemiology, clinical features, and complications of facial herpes zoster. METHODS: We analyzed the medical records of 977 patients who visited Sanggye Paik Hospital between January 2002 and December 2017. We categorized patients into 8 groups based on the dermatomal distribution of herpetic lesions. We investigated the correlations between clinical features, prognosis, and complications. RESULTS: We analyzed the medical records of 977 patients who visited Sanggye Paik Hospital between January 2002 and December 2017. We categorized patients into 8 groups based on the dermatomal distribution of herpetic lesions. We investigated the correlations between clinical features, prognosis, and complications. Results: The most common site of involvement of facial herpes zoster was the ophthalmic branch of the trigeminal nerve (59.2%). Herpes zoster involving the ophthalmic and the maxillary branches of the trigeminal nerves showed a significantly higher incidence rate of herpes zoster ophthalmicus than that observed with herpes zoster involving only the ophthalmic branch (odds ratio 7.373). Age and periorbital swelling were significantly correlated with herpes zoster ophthalmicus (p<0.001). Facial palsy was significantly correlated with otalgia and cutaneous ear involvement (p<0.001). Postherpetic neuralgia (PHN) occurred in 41% of patients with facial herpes zoster. Patients who received antiviral treatment within 3 days showed lower rates of PHN (35.8%) than patients who received treatment after 4 days (45.4%) (p=0.002). CONCLUSION: Facial herpes zoster is associated with several neurological complications. Variables including age, periorbital swelling, otalgia, and cutaneous ear involvement are useful predictors of complications and prognosis. Early institution of antiviral treatment and appropriate interdepartmental consultations are required for better treatment outcomes.

A Case of Extramammary Paget's Disease on the Back / 대한피부과학회지

Ectopic extramammary Paget's disease (EMPD) is a rare variant of EMPD that develops in non-apocrine regions. We present a 70-year-old man in whom ectopic EMPD affected the lower back. Initially, erythematous scaly plaques with several papules on the back were suggestive of Bowen's disease. However, the biopsy specimen and immunohistochemical study results were consistent with EMPD features. The lesion was resected with a 1-cm safety margin and covered with a full thickness local skin graft. Ectopic EMPD is so rare that only few cases of EMPD in a non-apocrine region have been reported. We considered this case of EMPD on the back to be interesting since there has been no previous case reported in this location in Korea.

Progressive Cribriform and Zosteriform Hyperpigmentation: A Case Series and Review of the Literature / 대한피부과학회지

Progressive cribriform and zosteriform hyperpigmentation (PCZH) is a distinctive pigmentary disorder observed along the lines of Blaschko. Clinically, the lesions appear as uniformly tan, cribriform macular hyperpigmentation with a zosteriform distribution, without a history of rash, injury, inflammation, or other associated cutaneous or internal abnormalities. Histopathological specimens show increased melanin pigmentation in the basal cell layer with a complete absence of nevus cells. We report 8 cases of PCZH and review the literature on this peculiar disorder.

A Case of Sexual Enhancer Induced Fixed Drug Eruption / 대한피부과학회지

Fixed drug eruption is a commonly reported mucocutaneous drug eruption. A 61-year-old male presented to our clinic with a complaint of an itchy round erythematous patch on the left hand dorsum with myalgia. On taking medical history, the patient correlated the episode with the intake of an oral sexual enhancer that he had obtained over the counter. We found the medicine contained tadalafil and sildenafil in combination with herbal ingredients. A short course of oral corticosteroid therapy resulted in the complete resolution of the lesion leaving residual hyperpigmentation of the skin involved. Various sexual enhancers with fancy names and attractive packaging are available without requiring a doctor's prescription. Most contain phosphodiesterase-5 inhibitors in various concentrations, often with herbal additions. These drugs are used erratically by the lay public, and often produce side effects. Herein, we report a case of fixed drug rash related to a sexual enhancer, which we believe to be the first report in Korea.

A Case of Papular Acantholytic Dyskeratosis Treated with Carbon Dioxide Laser / 대한피부과학회지

Papular acantholytic dyskeratosis is a collection of papular skin lesions that occur in the intertriginous and genital area. They show a characteristic histology of focal suprabasal acantholysis that distinguishes it from Hailey-Hailey disease or Darier disease. We describe a 50-year-old man with an asymptomatic papular eruption on the perianal area for several years. Histologically, a biopsy specimen showed diffuse hyperkeratosis and irregular acantholysis throughout the epidermis. We used carbon dioxide laser therapy as a therapeutic option. Despite causing a long and painful healing process, a considerable reduction of the symptoms was achieved. Although we do not know the precise nature or the incidence of this disease, papular acantholytic dyskeratosis should be included in the differential diagnosis of verrucous papules in perineal or perianal areas and carbon dioxide laser may represent a good therapeutic option.