Linear Lichen Sclerosus along the Blaschko's Line of the Face

Lichen sclerosus et atrophicus (LSA) is an inflammatory disease that primarily causes anogenital lesion in middle aged women. We present here a case of facial LSA with an asymptomatic, well-demarcated, whitish to bluish, atrophic patch in a linear pattern on the forehead of a 48-year-old woman. This case showed an atypical clinical presentation and it mimicked en coup de sabre, but the histopathologic results confirmed the diagnosis of LSA.

Subcutaneous Dermatofibroma

Dermatofibroma (DF) is usually confined to the dermis and the overlying epidermis is usually hyperplastic. Although DF with deep subcutaneous extension is commonly encountered, purely subcutaneous DF is uncommon. In this review, we describe a case of a 41-year-old male patient who presented with a painless, subcutaneous, hard papule on the left thigh. After the skin had been incised the lesion was totally removed, and histopathology revealed a subcutaneous dermatofibroma.

Acute Generalized Exanthematous Pustulosis Caused by Diltiazem

Acute generalized exanthematous pustulosis is clinically characterized by fever, pruritus and an acute pustular eruption. It can be described as having an abrupt onset and then spontaneous resolution occurs shortly after the start of symptoms, and there is usually only a single episode. Most cases have been triggered by the ingestion of drugs. Diltiazem hydrochloride is a calcium channel blocker that is commonly used for treating hypertension and angina. This drug was found to be the responsible agent in our current patient. There have been 9 such case reports in the English medical literature, yet this is the first such report in the Korean medical literature. We present the case of a 51-year-old male who experienced an acute generalized exanthematous pustulosis due to diltiazem hydrochloride and we review the relevant literature.

A Case of the Facial Variant of Eruptive Vellus Hair Cyst / 대한피부과학회지

Eruptive vellus hair cysts (EVHC) are characterized by multiple, small, discrete red or brown colored papules that usually occur on the chest and extremities. Their etiology is unknown. A variant form of EVHC that occur exclusively on the face is rare and it is very characteristic for its location and color. We report here on a facial variant of EVHC that occurred on the face of 23-year-old woman with asymptomatic, skin-colored to bluish tiny papules. The lesions first appeared at the age of 22-years.

A Clinicopathologic Study of 14 Cases of Acquired Reactive Perforating Collagenosis / 대한피부과학회지

BACKGROUND: Reactive perforating collagenosis is one of the perforating disorders that are characterized by transepidermal elimination of dermal materials. It can be associated with systemic disease such as chronic renal disease and/or diabetes mellitus. OBJECTIVE: We wanted to investigate the clinical and histopathological features of reactive perforating collagenosis. METHODS: We reviewed the medical records, clinical photographs and histopathologic slides of 14 cases of reactive perforating collagenosis that were seen in our department. RESULTS: The most common clinical features were flesh-colored, dome-shaped papules with a keratinous plug. Residual scarring was seen from the previously healed lesions. Half of the patients had skin lesions on the whole body except the face, palm and sole. Most of the patients (79%) had at least one systemic disease. Chronic renal failure (21%) and diabetes mellitus (29%) were the most commonly associated conditions. The other associated conditions were hypertension, acute pyelonephritis, non-small cell lung cancer, herpes zoster, transplantation and non-Hodgkin lymphoma. Three of the cases (21%) were otherwise healthy. Most patients benefited from topical steroid and oral antihistamine when their disease was regressing. CONCLUSION: This study demonstrated the clinicopathologic features of reactive perforating collagenosis. It is frequently associated with diabetes mellitus and chronic renal failure, but this may also develop in patients with other systemic disorders, and also in those patients who are without any medical problems.