SWIMMERS ITCH CAUSE SKIN

The decay products of cercariae increase the inflammatory reaction, which is observed in the final stages of swimmer’s itch, after which spontaneous recovery occurs. Since humans are not the final host for these parasites, they soon die in the thickness of the skin. Enzymes have strong immunogenic and allergenic properties, therefore, a pronounced inflammatory reaction occurs at the site of penetration of cercariae and in the course of their movement. The cause of the first symptoms of swimmer’s itch are hydrolytic enzymes secreted by parasite larvae for deeper penetration into tissues, as well as mechanical irritation. When bathing a person in such a pond, the larvae of the parasite first attach to the surface of the skin, and then with the help of a gnawing apparatus penetrate into its thickness. A prerequisite is the habitation of some species of mollusks in the lake, acting as an intermediate host for trematodes – in their body, the transformation of miracidia into cercariae occurs. Most often, cercariae are found in warm shallow reservoirs with fresh stagnant water. The inability of parasite larvae to the conditions of the human body largely determines the peculiarities of the course of swimmer’s itch. Usually this disease is the result of the introduction of cercariae (larvae) of trematodes that parasitize the body of waterfowl, and in this case a person acts as a “random host”. Causesĭespite the fact that some types of schistosomes and other trematodes can cause parasitic diseases of the urinary tract and intestines in humans, the cause of swimmer’s itch is extremely rare for the above parasites.

SWIMMERS ITCH CAUSE SKIN

Most often, pathology affects children due to the thinness of the skin and increased reactivity of the body at this age. Swimmer’s itch is most often found in Africa and Asia, where a warm climate contributes to the development of trematodes in freshwater stagnant reservoirs. Schistosomes and related flatworms have a complex life cycle, with cercariae usually embedded in the body of the final host, where they transform into adults. Swimmer’s itch (cercarial dermatitis) is a parasitic skin disease caused by the introduction of cercariae (larvae of some trematodes) into the tissues and accompanied by a pronounced allergic reaction. Prognosis and prevention General information

Swimmers itch cause