PECULIAR FACIAL ERYTHEMATOSQUAMOUS LESIONS IN 2 SIBLINGS WITH CYCLICAL SUMMER IMPROVEMENT AND WINTER RELAPSE - A VARIANT OF KERATOSIS LICHENOIDES-CHRONICA

A 7-year-old girl had erythematous hyperkeratotic papules and plaques that improved in summer and recurred in winter since the age of 4 mont hs. She had had irregular, ridge-like erythematosquamous lesions on th e arms with the same seasonal variation. The lesions on the arms impro ved with age. Light and electron microscopic examination showed marked degeneration of keratinocytes and prominent apoptosis. Her older brot her had a similar but milder dermatosis. We believe these cases may re present a variant of keratosis lichenoides chronica.