A case of eruptive lichen planus

Abstract

A case of eruptive lichen planus is reported. A 69-year-old man had generalized dark red erythema and papules with pruritus for 5 months. Dermatological examination showed dark red erythema on the head, face, trunk and limbs, some of which were hypertrophic lichenoid and flat papules covered by fine scales. Dandruff was present on the scalp, with no hair bundles. Wickham marks were seen on oral buccal mucosa, and white macules were seen on genital mucosa. Histopathology of skin lesions showed epidermal defect, band-like lymphocytic infiltration and pigment incontinence in the superficial dermis. PAS staining was negative. The diagnosis was eruption lichen planus. After 1 month of treatment with low dose glucocorticoid combined with hydroxychloroquine, hyperpigmentation was left with no new rash.

Keywords

• lichen planus
• eruptive type