Parakeratosis hjorth-sabouraudR23.4

Misnomer for a disease of the apical finger areas which typically occurs in children before the age of 8.

This is not an independent clinical picture, but an eczematous or psoriatic change of the end finger (mostly index finger) with consecutive onychodystrophy and onycholysis, paronychia and (inconstant) subungual pustular formation. Etiologically the findings are based on a minus variant of acral (pustular) psoriasis (see below acrodermatitis continua suppurativa) or an atopic eczema.