Familial juvenile generalized pustular psoriasis.

The acral form of generalized pustular psoriasis is characterized by macroscopic pustules surmounting erythematous plaques that may progress from a localized distal eruption to involve the entire cutaneous surface. Juvenile-onset and familial-generalized pustular psoriasis are rare; familial-juvenile-generalized pustular psoriasis is exceptionally uncommon. A kindred of three children in the same generation had chronic, localized-acral pustular psoriasis and episodic-generalized pustular psoriasis.