[Dyshidrosis].

Dyshidrosis is a vesicular, non inflammatory and recurrent disease of the palms and soles related to eczema. Sometimes hyperhidrosis can induce inflammatory reactions. The diagnosis becomes obvious when a period of ferocious pruritus, vesicle develop on the sides of the fingers and the palms. These vesicles are imbedded in the epidermis below the thick stratum corneum. They are strongly distended and painful when they grow in size. They dry up and disappear within three weeks. Relapses are frequent in patients with a topy, sweat gland disorders or neurovegetative disturbances. Several clinical aspects are observed: bullous dyshidrosis, superinfection, psoriasiform keratodermia. Dyshidrosis in infectious, fungal or allergic origin can be cured by suppressing the causative agent, but complex or idiopathic lesions follow their own course and persist.