SYMMETRICAL INTERDIGITAL HYPERKERATOSIS OF THE HANDS - A NEW CASE

Congenital symmetrical interdigital hyperkeratosis is a rare disorder described by Frei in 1923, characterized by localized hyperkeratosis o f the interdigital spaces of the hands and feet. The authors report th e case of a 7-year-old girl affected by this condition. The skin hyper keratotic lesions appeared localized exclusively to the interdigital s paces of the hands. Histologic examination showed orthokeratotic hyper keratosis, hypergranulosis and acanthosis. Keratolytics failed to impr ove the clinical picture.