Acquired syndactyly secondary to acrodermatitis continua of Hallopeau

Conflicts of interest: none declared. Sir, Acrodermatitis continua of Hallopeau is believed to be a localized form of pustular psoriasis, usually affecting terminal parts of the digits. Long‐term effects include loss of the associated nails and resorptive osteolysis.1 Management is often difficult. The finger webs are dynamic structures, which change shape with movements of the hand. Increase in the tissue between fingers, leading to reduced or absent movement, is known as syndactyly. Full syndactyly with bony fusion can occur following severe hand trauma. Syndactyly with only soft tissue involvement can be a sequela of trauma and burns to the hands and is a feature of dystrophic epidermolysis bullosa. In these cases there is loss of epidermal surface and healing with scar formation in a hand rendered relatively immobile by pain, the digits held in adduction and flexion. We report a case of long‐standing localized acrodermatitis continua of Hallopeau which was followed by syndactyly.