Perforating folliculitis in association with hemodialysis

Five patients developed pruritic, keratotic, perforating follicular papules and nodules within 2 months of starting maintenance hemodialysis. Clinically and histologically, the papules and nodules showed the features of perforating folliculitis with superimposed prurigo nodularis, a condition not previously described in patients on maintenance dialysis. The patients with perforating folliculitis constituted 10% of our patients on dialysis during the period of this study. Notably, all five patients were black and had chronic renal failure secondary to diabetic nephropathy. The precise pathogenesis of perforating folliculitis in these patients is unclear at this time.

Larva migrans with eosinophilic papular folliculitis

A patient with typical larva migrans lesions associated with a highly pruritic papular folliculitis is presented. The time course of the evolution and the pathological picture - with local accumulation of lymphocytes, mast cells and eosinophils - mirror a typical thymus-dependent reaction to parasitic infestation. The papular and serpiginous lesions did not respond to the same type of therapy.

Squamous cell carcinoma arising in dissecting perifolliculitis of the scalp. A case report and review of secondary squamous cell carcinomas

Squamous cell carcinomas have been reported to arise within acne conglobata and hidradenitis suppurativa. A case report of a secondary squamous cell carcinoma (SSCC) arising in the third member of the follicular occlusion triad, dissecting perifolliculitis of the scalp (Hoffman's disease, perifolliculitis capitis abscedens et suffodiens) is presented. The fatal outcome of this case and a review of the literature emphasize the biologic aggressiveness of SSCCs arising in chronic inflammatory lesions or scars (Marjolin's ulcers). Compared to squamous cell carcinomas arising in actinic keratoses, the metastasis rate of these carcinomas arising in chronic inflammatory lesions is so high that early and aggressive therapy appear indicated.

Hemihypertrophy with unilateral folliculitis and acne

A case of congenital hemihypertrophy, right-sided folliculitis and acne in a 16-year-old boy is described. Except for hemihypertrophy and skin changes on the right side, no other abnormalities were found. A similar combination could not be found in the literature.

[Perforating granulomatous folliculitis in Becker's nevus (author's transl)]

Acneform lesions strictly confined to a Becker's nevus were observed in a 18-year-old man. Histologically, a granulomatous folliculitis with partial destruction of the epithelial root sheath and follicular cysts with focal penetration of keratin into the surrounding dermis were present, ruling out acne vulgaris. The concept of Becker's nevus as a complex nevogenic process, affecting ectodermal, neuroectodermal, and mesenchymal structures, also in terms of dysfunction of the pilary complex, is suggested.

Keratosis pilaris atrophicans faciei (ulerythema ophryogenes): a cutaneous marker in the Noonan syndrome

Five cases are reported of Noonan's syndrome, all of which presented keratosis pilaris atrophicans faciei (ulerythema ophryogenes). This dermatosis fulfils the criteria mentioned by Noonan & Ehmke (1963) as a pointer for the investigation of cardiac anomalies, especially of the pulmonary artery.

Headdress. Unrecognized cause of neck mass

The principal lymphatic drainage of the scalp is into the posterior cervical lymph chain. Recent experiences in the differential diagnosis of neck mass have implicated the scalp as a common source of cervical lymphadenopathy. Specific attention is drawn to a popular ethnic headdress called "corn-rows" as a source of dependent lymphadenitis.

Hereditary hypotrichosis (Marie-Unna type) (two cases)

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