Your daughter will scratch her bottom, probably in her sleep, catching eggs under her fingernails, ready to go back into her mouth causing re-infection. The egg laying process on the anus can be intensely itchy especially when the eggs hatch into worms. However it is very common for children to have a spell of repeated infections with worms just as you describe. This is obviously worrying for you and highly irritating for your daughter. You say your daughter has had threadworms repeatedly.
Girls are more likely than boys to get worms and these can move onto the vagina causing even more itching. This egg laying usually happens at night or after a bath when the child is warm and still. The worms mate in the intestine, the males disintegrate and the females travel down to the rectum and lay their eggs as they emerge on the skin around the anus.
When inside the gut the eggs hatch and tiny worms travel down the intestine feeding on the contents. At room temperature such eggs can survive for two to three weeks in bed sheets or soiled underwear. Occasionally eggs are inhaled as dust when they have fallen into the bed sheets.
A child catches worms by swallowing minute eggs which are usually picked up on hands, particularly under the fingernails, when the child sucks her fingers, bites her nails or puts food into her mouth using her hands. It affects all ages but especially children between five and 14 years. The threadworm is a common parasite throughout the world but prefers cold and temperate climates like our own. In fact threadworms occur in children from all backgrounds and all levels of hygiene. The thought of worms may horrify you as it does most parents who think they are caused by poor hygiene. Nearly half of all children under the age of ten and many adults have threadworms at some time often without realising as the infection usually causes no symptoms whatsoever. We’re partnering with 100s of creative people and businesses to bring you 1000s of perfect products for you and your family (even your four legged friends!)… in just one place.Threadworms are very common.
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