Diagnosis

This affection, when mild, somewhat resembles sudamina, but, if severe, might be mistaken for eczema vesiculosum, or scabies. Itching and burning sensations will distinguish it from sudamina.

In eczema vesiculosum there is increased and severe pruritus, attended with a hot and reddened surface surrounding the vesicles, which are of a pin-head or less in size; these vesicles rupture early and expose a moist surface, and the drying exudation forms crusts. In dysidrosis this exposed surface is dry, and in the vesicular stage un-surrounded with inflamed skin.

In scabies there is the characteristic burrow, or cunicu-lus, leading up to the vesicle, and, in a later stage, multiform lesions appear, such as papules, pustules, scratch marks, etc., which, together with its favorite regions and the reddened surface surrounding the vesicles, make this affection distinct.