Dyshidrosis refers to a skin condition that causes small water blisters on feet, palms of the hands, and the sides of the fingers. These blisters are especially common on the foot because of friction from ill-fitting shoes. This causes skin damage, and a blister develops to protect the region as the skin undergoes the healing process. Sometimes, this condition mimics the rash or blisters of certain viral and bacterial infections (e.g. herpetic whitlow).
Dyshidrosis is a chronic type of eczema that causes a person to experience burning and itching sensations for a few weeks. In some cases, blisters reoccur before the skin can heal completely from previous blisters.
Other names for this skin inflammation are dyshidrotic eczema, pompholyx eczema, cheiropompholyx, pedopompholyx, acral vesicular dermatitis, and chronic hand dermatitis.