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.
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. Because of their small size, pinworm eggs sometimes can become airborne and ingested while breathing.
If you or someone in your family has pinworms that keep coming back, or if more than one family member is infected, every member of your family or household should be treated. Follow-up care is a key part of your treatment and safety.
You can get infected by: touching objects or surfaces with worm eggs on them – if someone with worms does not wash their hands. touching soil or swallowing water or food with worm eggs in it – mainly a risk in parts of the world without modern toilets or sewage systems.
The people most likely to be infected with pinworm are children under 18, people who take care of infected children and people who are institutionalized. In these groups, the prevalence can reach 50%. Pinworm is the most common worm infection in the United States.
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.
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.
British researchers have identified a protein that exists in some people's gut mucus that seems to be toxic to parasitic worms. Those with the protein are able to ward off infection, while those who lack the protein are more easily infected with the parasites, researchers said.
Pinworms can come back if your child comes into contact with pinworm eggs again. They can stay alive in your home for up to 2 to 3 weeks. Make sure everyone in your family washes their hands carefully after going to the toilet, changing diapers, and before preparing or eating food. Wash your bed linens and clothes.
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.
Medication can effectively treat pinworm infections, though reinfection is possible. Serious complications and long-term health effects are rare.
Call Your Doctor If: Pinworm is seen (white, ¼ inch or 6 mm, and moves) Anal itching lasts more than 1 week. You think your child needs to be seen.
In order to stop the spread of pinworm and possible re-infection, people who are infected should shower every morning to help remove a large amount of the eggs on the skin. Showering is a better method than taking a bath, because showering avoids potentially contaminating the bath water with pinworm eggs.
Call the doctor if your child complains of itchy skin or always seems to be scratching the anal or vaginal area. Also ask if pinworms could be why your child has trouble sleeping or has begun to wet the bed.
People of all ages can become infected with pinworms, but the infections are found most often in children. Caregivers and family members of infected children have a higher risk of infection.
Crowding is a risk factor for the spread of pinworm as well as psychiatric disorders by increasing mental stress [3], therefore, pinworm is known as a group infection and most commonly found in large families and in institutions including orphanages, boarding schools, mental homes, and hospitals [4].
According to the CDC, pinworms can survive for up to 2 to 3 weeks in the home. So parents…you have a lot of cleaning to do to get rid of that itchy feeling you just got, and to ensure your family does not re-infect themselves. Where should you start when it comes to cleaning your home post-pinworm infection?
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)
Eggs can live for 2 to 3 weeks outside the body. They can be found in house dust, on toilet seats, bed linens and toys and in play areas in or outside the home. Although pinworms only grow in humans, the eggs can be carried in a pet's fur.
After a few weeks, the female pinworms move to the end of the large intestine, and they come out of the body at night to lay their eggs around the anus (where poop comes out). The amount of time that passes from when someone swallows the eggs until the worms lay new eggs is about 1 to 2 months.
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.
Pinworms mostly reside in areas of the large intestine of humans but are sometimes found in the small intestine. The life expectancy of these worms is approximately four to eight weeks.
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.