Boots WebMD Partners in Health
Return To Boots

Digestive health centre

Complications of threadworms

NHS Choices Medical Reference

NHS Choices Logo

Threadworms can cause intense itching around the anus and vagina, and continual scratching can cause your skin to become inflamed. In rare cases, if the skin is broken, bacteria can enter the wound, leading to another infection. See your GP, or call NHS Direct on 0845 4647, for further advice if you think that you may have another infection.

A threadworm infection outside of the intestine is very rare, but has been known to occur in:

  • the vagina, 
  • the uterus (womb),
  • the pelvic peritoneum (lining on the inside of the abdomen),
  • the abdominal cavity (stomach area),
  • the liver, and
  • the lungs.

Re-infection

Re-infection is common if threadworm is left untreated. It is possible that it will become a persistent (ongoing) problem. If this happens, it can lead to more serious problems including:

  • insomnia (difficulty getting to sleep, or staying asleep),
  • bed wetting (enuresis), and
  • weight loss.

Anus

The anus is the opening at the end of the digestive system where solid waste leaves the body.

Bacteria

Bacteria are tiny, single-celled organisms that live in the body. Some can cause illness and disease and some are good for you.

Vagina

The vagina is a tube of muscle that runs from the cervix (the opening of the womb) to the vulva (the external sexual organs).

Uterus

The uterus (or womb) is a hollow, pear-shaped organ in a woman where a baby grows during pregnancy.

Liver

The liver is the largest organ in the body. Its main jobs are to secrete bile (to help digestion), detoxify the blood and change food into energy.

Lungs

The lungs are a pair of organs in the chest that control breathing. They remove carbon dioxide from the blood and replace it with oxygen.
Medical Review: November 11, 2009

Popular Slideshows & Tools on Boots WebMD

woman looking at pregnancy test
Early pregnancy symptoms
donut on plate
The truth about sugar addiction
fish n chips
Diarrhoea & more
man coughing
10 common allergy triggers
couple watching sunset
How much do you know?
hand extinguishing cigarette
13 best tips to stop smoking
woman washing face
Living and dealing with eczema
boy looking at broccoli
Quick tips for feeding picky eaters
bag of crisps
Food cravings that wreck your diet
dogs face
Workout with Fido
polka dot dress on hangar
Lose weight without dieting