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.
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.
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.
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.
Pinworm infections are contagious. The worms get into the body when people swallow the tiny pinworm eggs. The eggs can be on contaminated hands, under fingernails, and on things people touch a lot, such as: clothing, bed linens, and towels.
A person is infected with pinworms by ingesting pinworm eggs either directly or indirectly. These eggs are deposited around the anus by the worm and can be carried to common surfaces such as hands, toys, bedding, clothing, and toilet seats.
Pinworm infection is spread by the fecal-oral route, that is by the transfer of infective pinworm eggs from the anus to someone's mouth, either directly by hand or indirectly through contaminated clothing, bedding, food, or other articles.
Pinworm infection may cause: Itching around the anal area, difficulty sleeping and irritability. If it is a severe infection, symptoms may include: nervousness.
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.
Adults are rarely affected, except for parents of infected children. Infection often occurs in more than one family member. While an infected person sleeps, female pinworms crawl out of the anus and lay their eggs on the surrounding skin.
Pinworm Infection Symptoms
Anal itching, especially at night. Restless sleep. Itching in the vaginal area -- if adult worms move to your vagina. Feeling irritable.
Most people don't experience serious complications from pinworm infections, but in rare cases the following complications can occur: Urinary tract infections (UTIs). UTIs can develop if you do not treat the pinworm infection. Vaginitis and endometritis.
Most of the time, there aren't any. You might have anal itching, especially at night. You could also have stomach pain, nausea, or vaginal itching. Sometimes pinworms can be seen around your anus or on your underwear or bed sheets about 2 to 3 hours after you've gone to bed.
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.
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.
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.
Call Your Doctor If:
Pinworm is seen. Skin around the anus gets red or tender. Anal itching lasts more than 1 week.
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.
Summary. Pinworm is the most common worm infection in Australia. The major symptom is an itchy bottom, particularly at night. Treatment usually includes a single or 2-dose course of medication that should be taken by all members of the affected household.
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.
Yes. A pinworm infection can also be spread through: Bed sheets and undergarments: Eggs can spread through contact with contaminated sheets, towels or underwear of infected people. Inhalation: Because the eggs are so tiny, they can travel through the air and inhaled.
Causes of an itchy bottom
infection and infestation – such as staphylococcal bacterial infections and scabies. a skin condition – such as atopic eczema or psoriasis. haemorrhoids (piles) – swellings that contain enlarged and swollen blood vessels in and around the anus.