It leads to blockage of the sweat ducts. Clinically, numerous monomorphic clear vesicles without surrounding erythema are seen on the skin, usually the trunk. Typically the skin remains dry. The disease is self-limiting. Calamine lotion can be prescribed.
Prevention is by avoiding prolonged hot, humid environment and overclothing.
Vesicles are common sign of acute dermatitis. They are usually associated with intense pruritus. Vesicles are easily ruptured because of self scratching and results in multiple excoriations. Vesicles seldom rupture because of the thick stratum corneum. Usually, the cause is unknown but occasionally may be secondary to severe tinea infection or contact dermatitis occurring in other part of the body.