Complications. Typical pinworm infections don't cause serious problems. In rare circumstances, heavy infestations can cause infection of female genitals. The parasite can travel from the anal area up the vagina to the uterus, fallopian tubes and around the pelvic organs.
If left untreated, the intense itching and scratching associated with these infections will result in secondary bacterial infections. Some of these may be difficult to treat. Untreated people can continue to infect other people.
Pinworms don't cause any harm (just itching and restless sleep), and it won't take long to get rid of them.
Call Your Doctor If:
Pinworm is seen. Skin around the anus gets red or tender. Anal itching lasts more than 1 week.
Small, thin, grayish-white worms may be visible around the anus two-three hours after the person falls asleep. The worms look like little pieces of thread, which is why they are sometimes called threadworm. You can capture the worms using clear tape or let your doctor know that you saw them.
Once someone has ingested pinworm eggs, there is an incubation period of 1 to 2 months or longer for the adult gravid female to mature in the small intestine. Once mature, the adult female worm migrates to the colon and lays eggs around the anus at night, when many of their hosts are asleep.
Pinworm infection (called enterobiasis or oxyuriasis) causes itching around the anus which can lead to difficulty sleeping and restlessness. Symptoms are caused by the female pinworm laying her eggs. Symptoms of pinworm infection usually are mild and some infected people have no symptoms.
To treat pinworm infection, your doctor may recommend over-the-counter pyrantel pamoate or prescribe medication to all members of your household to prevent infection and reinfection. The most common prescription anti-parasite medications for pinworms are: Mebendazole. Albendazole (Albenza)
How long does pinworms last? The life cycle of a pinworm is 4 to 6 weeks. Without treatment, infestation will continue as long as fresh eggs are being swallowed, unless a person develops immunity to pinworms, which is unusual before age 15.
Strict hygiene measures can clear up pinworm infection without medication, and reduce the risk of reinfection. The worm has a lifespan of about six weeks, therefore the strict hygiene needs to last that long.
Most pinworm infections are mild and easily treated. Your doctor may prescribe a single chewable tablet of a medicine called mebendazole. A second tablet is taken about 3 weeks later if the infection isn't cured. Or your doctor may recommend another kind of medicine called pyrantel, which is taken as a single dose.
Chlorine dioxide gas inactivates pinworm eggs in a non-invasive and non-corrosive manner.
The medications used for the treatment of pinworm are either mebendazole, pyrantel pamoate, or albendazole. Any of these drugs are given in one dose initially, and then another single dose of the same drug two weeks later. Pyrantel pamoate is available without prescription.
Pyrantel is a safe, effective, and inexpensive treatment for intestinal worms, and usually cures the condition after a single dose. It has very few side effects and is not known to cause severe toxicity in humans.
As eggs can become infective after 3-5 days the bathing should be repeated every third day. If a problem is occurring, then daily bathing is best. If the skin is irritated a dilute mild antiseptic can help. Applying Vaseline to the skin after cleaning can help protect the skin and prevent the eggs sticking.
The key is to break the 6-week cycle of pinworm reinfection by killing any live pinworms and preventing the ingestion of eggs. A diagnosis should be confirmed before treating with medications. Medications kill only the adult worms and have no effect on developing eggs and larvae.
Many anti-worm preparations, for example pyrantel (e.g. brand names Anthel, Combantrin and Early Bird) and mebendazole (e.g. Combantrin-1 with Mebendazole, Vermox) can be bought over-the-counter at pharmacies. However, some are only available on prescription, such as albendazole (Zentel).
If you are self-treating for pinworms, take the medication once only. Do not repeat the dose without talking with your doctor first. Depending on the type of worm infection you have, your doctor may direct you to take the medication only once or for several days.
So many of us or our family members have experienced this relatively mild though distressing infection. Pinworm is the most common worm infection in North America with up to 50% of some groups of school aged children getting infected.
The adult female worm crawls out of the infected person's anus at night and lays her eggs in the surrounding skin. This causes itching and scratching. The worms can also move to the vagina of a female child and cause itching. Eggs can live for 2 to 3 weeks outside the body.
Pinworms do not cause abdominal pain, bloody bowel movements,fevers, or poor appetite. If the person has any of these signs or symptoms, they may have a more serious condition and should call a doctor or visit the hospital's emergency department.
While an infected person sleeps, female pinworms crawl out of the anus and lay their eggs on the surrounding skin. People get pinworm infections from swallowing these eggs after touching an infected person's skin or personal belongings, such as clothing, bedding, and toys.