Algodystrophy (reflex sympathetic dystrophy) complicating unilateral acrodermatitis continua.

A 65-year-old female suffered trauma to her left hand on which acrodermatitis continua (psoriasis of Hallopeau) developed. It is suggested that the persistent pain of this skin condition, its poor response to treatment and her allied mental state led to the development of a severe algodystrophy with marked underlying osteoporosis.