Onycholysis is the detachment of a nail plate from its distolateral attachments. There are numerous aetiologies: congenital, traumatic, microbial, toxic, dermatological, systemic and benign or malignant tumours. We report a case with onycholysis of the ring-fingers of both hands whose symmetrical and bilateral characteristics temporarily confused the diagnosis.

Over the past 20-years, it has been shown that the majority of patients with dermatitis herpetiformis (D.H.) suffer from coeliac disease of varying intensity. Dermatitis herpetiformis may also be associated with other autoimmune diseases but only exceptionally with chronic ulcerative colitis (U.C.).

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