The relation of acrodermatitis continua suppurative (Hallopeau) to psoriasis is controversial. However, some consider it as a localized form of psoriasis characterized by pustules limited to one or a few fingertips including the nail bed. Nail loss is not uncommon. Here we present a typical case of acrodermatitis continua of Hallopeau characterized by chronic inflammation and pustulation confined to one finger (thumb) with nail loss of more rhan three years duration.