Acropustulosis of Hallopeau

**Definition:** An uncommon pustular form of psoriasis which may rarely eventuate into generalised pustular psoriasis. It is characterised by pustules and variable scaling occurring in and around the nails and nail-beds of the fingers and toes. It may cause marked nail destruction and may be associated with a distal interphalangeal joint arthritis, with palmoplantar pustulosis or with plaque psoriasis elsewhere.

**Exclusions:** - Palmoplantar pustulosis