If one member of a household is infected, it is common for others also to be infected. However, they will still pass out eggs which can then infect other people. This is because many people with threadworm infection do not have any symptoms. Threadworms treatmentĪll household members, including adults and those without symptoms, should be treated. Rarely, threadworms can cause other problems such as loss of appetite and weight loss. In girls, threadworms can wander forwards and lay their eggs in the vagina or urethra (the tube through which you pass urine). Large numbers of threadworms may possibly cause mild tummy (abdominal) pains and make a child irritable. Often, the worst thing about them is the itch and discomfort around the back passage (anus) which can wake people from sleep. The number of threadworms in the gut during an infestation varies from person to person. Very rarely, threadworms in the nose have been discovered. So a cycle of threadworm infection can go on and on. ![]() These eggs get on to fingers and under fingernails and can then be swallowed as described above.Īny eggs that are swallowed then hatch and grow into adult worms in the gut. This area around the anus is then scratched to relieve the itching, often during sleep. The eggs are too small to see without a microscope but cause itching around the anus due to mucus that surrounds the eggs being irritating to the skin. Threadworms live for about 5-6 weeks in the gut and then die.īefore they die, the female worms lay tiny eggs around the back passage (anus). When that next person puts their hands in their mouth (for example when eating or biting their fingernails), the egg is swallowed and moves into their digestive tract the worms then hatch from the eggs and the cycle starts again. ![]() ![]() When someone else touches that surface the egg then transfers to their hand. If they do not wash their hands thoroughly at the time, this egg can get transferred to a surface such as a door handle. Typically someone with threadworms (often a child), touches their bottom (either when they are cleaning themselves after going to the toilet or when they are scratching) and one or more of the tiny eggs gets caught under their fingernail. How do you get threadworms in the first place?
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