[Occurrence of swimmer's itch in Tyrol].

Cercariae from trematodes of birds are capable of penetrating human skin causing a dermatitis, called swimmer's itch. In 1992, after a hot dry summer there was a marked increase in the incidence of cercarial dermatitis in Austria. Although the increased incidence of this complaint can be quite worrisome for the population, the occurrence of swimmer's itch can, in fact, generally be seen as harmless. Cercarial dermatitis responds well to treatment with topical antihistamines or cortisone; even without medication the skin rash heals within 2-3 weeks. The effectiveness of various preventive measures (such as protective sun cream or patting the skin dry) is controversial. The use of molluscicides is definitely contraindicated due to the inoffensive nature of this dermatitis. While it is usually easy to recognize swimmer's itch when there is an increased incidence, the diagnosis is often missed when it occurs sporadically, due to its unspecific characteristics.