Trematode Health Dictionary

Generally refers to helminth in the Class Trematoda or trematodes.... fluke

Bather’s itch, also called schistosome DERMATITIS, is the term given to a blotchy rash on the skin occurring in those bathing in water which is infested with the larvae of certain trematode worms known as schistosomes (see SCHISTOSOMIASIS). The worm is parasitic in snails. The skin rash is caused by penetration of the skin by the free-swimming larval cercaria. Bather’s itch is common in many parts of the world.... bather’s itch

Schistosomiasis; a diseases caused by a parasitic trematode and acquired by contact with water infected with cercariae shed by the snail intermediate host.... bilharzia

The infective stages of the Schistosomes and other trema todes, which are free living in water. In some trematodes (e.g. Fasciola), the cercariae develope into metacercariae for infection.... cercariae

Distoma is a general term including various forms of trematodes, or ?uke-worms, parasitic in the intestine, lung and other organs.... distoma

An opening of the excretory system, normally situated on the ventral side at the anterior part of the body (e.g. in trematode miracidia).... excretory pore

The common liver fluke. In tropical regions this species is replaced by F. gigantica. Like all trematodes, their intermediate hosts are aquatic snails. Infection occurs when the infective metacercariae are ingested on vegetation in swampy areas. Normal final (definitive) hosts are sheep, cattle and various wild animal species. Humans can acquire fascioliasis if they eat contamiated water cress etc.... fasciola hepatica

Trematode worms infecting the lungs of humans and other crab-eating mammals. Belong to the genusParagonimus and are found in parts of Africa, Latin America, Asia and SE Asia.... lung flukes

A lid-like structure covering certain cestode and most trematode eggs.... operculum

The glands which provide substances for the development of the egg and the formation of the shell in trematodes and cestodes.... vitelline glands

Any species of worm that has a flattened shape.

Two types of flatworm are parasites of humans: cestodes (tapeworms) and trematodes (flukes, schistosomes; see liver fluke; schistosomiasis).... flatworm

Several types of worm, or their larvae, existing as parasites of humans. They may live in the intestines, blood, lymphatic system, bile ducts, or in organs such as the liver. In many cases, they cause few or no symptoms, but some can cause chronic illness. There are 2 main classes: roundworms and platyhelminths, which are subdivided into cestodes (tapeworms) and trematodes (flukes).

Worm diseases found in developed countries include threadworm infestation, ascariasis, whipworm infestation, toxocariasis, liver-fluke infestation, and various tapeworm infestations. Those occurring in tropical regions include hookworm infestation, filariasis, guinea worm disease, and schistosomiasis.

Worms may be acquired by eating undercooked, infected meat, by contact with soil or water containing worm larvae, or by accidental ingestion of worm eggs from soil contaminated by infected faeces.

Most infestations can be easily eradicated with anthelmintic drugs.... worm infestation

n. (pl. cercariae) the final larval stage of any parasitic trematode (see fluke). The cercariae, which have tails but otherwise resemble the adults, are released into water from the snail host in which the parasite undergoes part of its development. Several thousand cercariae may emerge from a single snail in a day.... cercaria