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In most cases, the symptoms of threadworm infestation include: Intense itching in the anal region at night when the worms lay eggs. Inflammation of the anus as a result of constant scratching. In some cases, mild abdominal pain. Sometimes, tiny, white threadworms can be seen wriggling in the faeces after a bowel movement. In rare cases, infestation causes appendicitis. What might be done? The diagnosis can be confirmed by identification of threadworm eggs in a swab taken from the anal region. Your doctor will probably prescribe an anthelmintic drug to kill the worms effectively and speed recovery. Usually, the entire household is treated.
Threadworm infestation is caused by the roundworm Enterobius vermicularis and is the most common parasitic worm infestation affecting humans in the UK. Usually, infestation occurs by ingesting worm eggs in contaminated food, on fingers, or in house dust. If they are swallowed, the eggs develop into adult threadworms in the intestine. At night, female threadworms crawl out of the anus to lay eggs around the anal region, causing intense itching. Threadworm infestation mainly affects children. Threadworms infest the intestine and emerge from the anus at night to lay eggs in the anal region, causing itching.