The worms die after about six weeks. Provided that you do not swallow any new eggs, no new worms will grow to replace them. So, if you continue the hygiene measures described above for six weeks, this should break the cycle of re-infection, and clear your gut of threadworms.
Threadworms do not go away by themselves, and people do not build up immunity to them, so they must be treated in order to eradicate them totally from the body.
Threadworms live about 5-6 weeks in the gut, and then die. However, before they die the female worms lay tiny eggs around the anus. This tends to be at night when you are warm and still in bed.
Threadworm begins with an itchy feeling around the anus (back passage), usually at night under warm sheets. Without treatment, threadworm may give rise to vaginitis (inflammation of the vagina) in girls and women. You can often see threadworms, a 1cm thread-like worm, wriggling in your child's stools or their bottom.
Threadworms live for about 5-6 weeks in the gut, and then die. Before they die, the female worms lay tiny eggs around the anus (back passage). This tends to occur at night when you are warm and still in bed.
The worms die after about six weeks. Provided that you do not swallow any new eggs, no new worms will grow to replace them. So, if you continue the hygiene measures described above for six weeks, this should break the cycle of re-infection, and clear your gut of threadworms.
If you have worms, a GP will prescribe medicine to kill them. You take this for 1 to 3 days. The people you live with may also need to be treated. Any worms in your gut will eventually pass out in your poo.
Parasites can live in the intestines for years without causing symptoms.
Threadworms do not cause major health problems, and are usually not the cause of tummy pain. Scratching of the bottom can cause a red rash around the anus, which can sometimes become infected. In girls they can move into the vagina, causing itching and a vaginal discharge.
Medicine kills the threadworms, but it does not kill the eggs. Eggs can live for up to 2 weeks outside the body. There are things you can do to stop becoming infected again.
Female threadworms lay an average of 11,000 tiny eggs, which are invisible to the naked eye. She lays these eggs outside the anus, or, in girls, around the vagina and urethra. Eggs are usually laid at night whilst the child sleeps.
Clean the home post-treatment
Worm eggs can survive for several days on external surfaces, but you can play your part in preventing a reinfestation by doing the following: Wash all the bedsheets and linen that family members have been sleeping on with hot water, to kill any remaining eggs.
People become infected, usually unknowingly, by swallowing (ingesting) infective pinworm eggs that are on fingers, under fingernails, or on clothing, bedding, and other contaminated objects and surfaces.
Pinworm eggs can cling to surfaces, including toys, faucets, bedding and toilet seats, for two weeks. So besides regular cleaning of surfaces, methods to help prevent the spread of pinworm eggs or to prevent reinfection include: Wash in the morning.
COMBANTRIN® is only effective against adult worms, which means any eggs or immature worms inside the body might still linger after the initial treatment. In order to minimise the risk of reinfestation, a follow-up treatment two to four weeks later is strongly recommended if symptoms are still present.
Red flags to look out for:
Loss of appetite. Weight loss. Bedwetting (consider other diagnoses e.g. Type 1 diabetes) Skin infections around anus caused by scratching.
The lifespan of threadworms is approximately 6 weeks, so it's important that hygiene measures are followed for at least this length of time. Everyone in the household must follow the advice outlined below.
In a small percentage of people and other animals, though, the worms gain a permanent mouth-hold and can stick around the intestines for years. That persistence often leads to malnutrition, which in turn tightens the grip of infection, initiating a spiral that becomes difficult to escape.
If you've noticed a sudden influx in the number of worm casts on your lawn, it's probably due to a change in weather. Earthworms thrive in damp weather which is why your lawn might be covered in worm casts during autumn and damp winter months.
Chlorine dioxide gas inactivates pinworm eggs in a non-invasive and non-corrosive manner.
Adult worms may live up to 17 years in the human body and can continue to make new microfilariae for much of this time.
The eggs can be spread among family members through sharing bath towels. They can survive for a couple of weeks on clothing, bedding and in general household dust. A family pet is never responsible. The only host for threadworms is a human.
Around 4 weeks after ingestion, the adult female moves down the gut and exits the body via the anus to lay a batch of eggs on the surrounding skin, often at night. The worm then dies, her reproductive mission complete.