Life cycle of a pinworm A grown pinworm is yellowish white, slender and about one centimetre long. 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.
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.
What to Expect: After taking the pinworm medicine, itching should stop in 5 to 7 days.
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.
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.
If you have pinworms, you might see the worms in the toilet after you go to the bathroom. They look like tiny pieces of white thread. You also might see them on your underwear when you wake up in the morning. But the pinworm eggs are too tiny to be seen without a microscope.
Pinworm infection may cause: Itching around the anal area, difficulty sleeping and irritability. If it is a severe infection, symptoms may include: nervousness.
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)
To treat pinworms, a doctor may recommend two doses of medication, 2 weeks apart and following strict hygiene practices to avoid reinfection. One medication, pyrantel pamoate, is available without a prescription. A doctor may not recommend medication for children under 2 years.
The eggs pass into the digestive system, where they hatch. About 1 to 2 months later, adult female pinworms lay eggs on the skin right around the anus, which makes the area itchy. Often, this happens at night.
Pinworm eggs become infective within a few hours after being deposited on the skin around the anus and can survive on objects for 2 to 3 weeks.
Scratching an affected area and then eating can lead to unintentionally ingesting pinworm eggs. This can lead to a repeat pinworm infection. Sometimes eggs on the anus hatch, and the larvae can reenter the large intestine. If not treated, this can cause the infection to continue indefinitely.
Pinworms can usually be treated completely with two doses of over-the-counter medicine called pyrantel pamoate, available in the United States under the brand names Pin-X and Reese's Pinworm Medicine.
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 in most over-the-counter (OTC) treatments for pinworms. This includes Reese's Pinworm Medicine and Pin-X. Prescription-strength medications are also available. Your doctor may prescribe a two-dose treatment of mebendazole or albendazole to help you clear the infection.
Accidentally swallowing or breathing in pinworm eggs causes a pinworm infection. The tiny (microscopic) eggs can be carried to your mouth by contaminated food, drink or your fingers. Once swallowed, the eggs hatch in the intestines and mature into adult worms within a few weeks.
Do not scratch. Itching around the anus caused by a pinworm infection usually happens at night. Try wearing gloves, pyjamas, and close-fitting clothing to help prevent scratching.
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.
Pinworm infection is very contagious. If you don't take precautions, it's easy to become reinfected. If anyone in your home has pinworms, take these steps to get rid of the pinworm eggs. Doing so will minimize your chances of reinfection.
One way to detect pinworms is to shine a flashlight on the anal area. The worms are tiny, white, and threadlike. If none are seen, check for 2 or 3 additional nights. The best way to diagnose this infection is to do a tape test.
Your child may be fussy and wake often at night. If your child is infected, it may take 2 to 8 weeks for symptoms to start.
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.
Complete die-off within the tested exposure time range was noted for 70 °C, 75 °C and 80 °C, however treatment at 60 °C and 65 °C allowed for development of a few eggs after incubation.
Prevalence of Enterobiasis
Infestation with pinworm ( Enterobius vermicularis) is known as enterobiasis. This is the most common helminth infestation in the United States, with an estimated 42 million infested, translating to 14% of the population.