SYMMETRICAL INTERDIGITAL KERATODERMA OF THE HANDS

We report the case of a 26-year-old man affected by a symmetrical kera toderma localized to the interdigital spaces of the fingers. No occupa tional, traumatic, or irritant factors were discovered. Clinical and h istological features were consistent with the diagnosis of symmetrical interdigital hyperkeratosis, a sporadic disorder described by Frei in 1926. We believe this condition to be less rare than the few cases re ported in the literature would suggest.