Subacute cutaneous lupus gyratus repens.

Background, Erythema gyratum repent is a rare paraneoplastic eruption. fo d ate, only sixty have appeared in the literature. We report a patient with c linical and histological cutaneous subacute lupus and typical erythema gyra tum repent. Case report. A 86-year-old woman presented with a 2-month history erythemat ous patches, confined mainly to the trunk, arms, thighs and the face. Cutan eous biopsy was compatible with cutaneous subacute lupus. After 4 weeks of hydroxychloroquine treatment, physical examination revealed erythematous, c oncentric. serpiginous and scaly bands on the trunk. Erythematous patches p ersisted on the limbs and the face. Physical examination and investigations in search of an internal malignancy were negative. All cutaneous lesions r esolved after three months of chloroquine and dapsone treatment. Discussion. Fourteen cases of erythema gyratum repent have been reported un associated with underlying malignancy. This eruption usually precedes the o ccurrence of the neoplasm. Erythema gyratum repent is a migrating gyrate er ythema with a serpiginous, concentric appearance creating a wood grain look in the skin, which is pathognomonic. Histological findings are not specifi c, showing light parakeratosis and perivascular lymphocytic infiltrate of s uperficial dermis. Five cases of cutaneous lupus associated with erythema g yratum repent eruption have been reported, Considering the negative check-u p in search of internal malignancy on a follow-up period of 20 months. our case is a probably re particular Form of subacute subacute lupus.