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What are symptoms of roundworms in humans?

Author

Emily Sparks

Published Jan 09, 2026

Roundworms are parasites that need to live in the body. These parasitic infections can cause diarrhea and fever. Types of roundworms in humans include pinworms and ascariasis.
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Symptoms and Causes

  • Cough.
  • Disturbed sleep.
  • Fever.
  • Restlessness.
  • Severe abdominal (stomach) pain.
  • Vomiting.
  • Wheezing.
  • Malnutrition.

How do you get rid of roundworms in humans?

How to get rid of roundworms in humans

  1. Mebendazole is the usual medicine used for children aged over 1 year, and for adults who are not pregnant or breastfeeding. ...
  2. Other medicines such as albendazole, levamisole, and ivermectin are used in countries where roundworms are common.

What poop looks like when you have worms?

Sometimes the worms are visible in the anal area, underwear, or in the toilet. In stools, the worms look like small pieces of white cotton thread. Because of their size and white color, pinworms are difficult to see.

How long does it take to show symptoms of roundworms in humans?

Early-phase symptoms

They usually begin four to 16 days after swallowing the eggs and last up to 3 weeks. They include: high temperature (fever) of 38C (100.4F) or above. a dry cough.

How do roundworms affect humans?

Roundworms do pose a significant risk to humans. Contact with contaminated soil or dog feces can result in human ingestion and infection. Roundworm eggs may accumulate in significant numbers in the soil where pets deposit feces. Once infected, the worms can cause eye, lung, heart and neurologic signs in people.

24 related questions found

How do I know if I have roundworms?

Have a red, itchy rash on your skin. Have stomach problems that last longer than two weeks — such as diarrhea or a stomachache. Have unexplained weight loss. See a worm or piece of a worm in your poop.

How do you test for roundworms in humans?

Health care providers can diagnose ascariasis by taking a stool sample and using a microscope to look for the presence of eggs. Some people notice infection when a worm is passed in their stool or is coughed up. If this happens, bring in the worm specimen to your health care provider for diagnosis.

What happens if roundworms go untreated in humans?

Most cases of ascariasis are mild and don't cause major problems. However, heavy infestations can spread to other parts of the body and lead to dangerous complications, including: Intestinal blockage. Intestinal blockage occurs when a mass of worms blocks your intestines, causing severe pain and vomiting.

What do roundworms look like in poop?

Roundworm: Roundworms are one of the most common intestinal parasites dogs can get. Like the name implies, roundworms will look like round strings in your dog's poop. Some people describe them as looking like spaghetti.

What to do if you think you have worms?

Treatment to get rid of worms

If you have worms, a GP will prescribe medicine to kill them. You take this for 1 to 3 days. The people you live with may also need to be treated. Any worms in your gut will eventually pass out in your poo.

How do you tell if you have worms?

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.

How do you know if you have a parasite in your stomach?

Signs and Symptoms

  1. Abdominal pain.
  2. Diarrhea.
  3. Nausea or vomiting.
  4. Gas or bloating.
  5. Dysentery (loose stools containing blood and mucus)
  6. Rash or itching around the rectum or vulva.
  7. Stomach pain or tenderness.
  8. Feeling tired.

What does it feel like when you have parasites?

The signs of a parasite are often caused by the toxins that it releases into the human bloodstream. Here are the most common symptoms: Unexplained constipation, diarrhea, gas, bloating, nausea or other symptoms of Irritable Bowel Syndrome. You traveled internationally and got diarrhea on your trip.

How long are roundworms in humans?

Roundworms can live inside the small intestine for up to 2 years. The worms are about as thick as a pencil. They can grow to be about 13 inches long.

Can you buy worm treatment for humans over the counter?

Mebendazole is a type of medicine for treating worms. It is used mainly for infections of the gut such as threadworms (sometimes known as pinworms) and other less common worm infections (whipworm, roundworm and hookworm). You can buy mebendazole from a pharmacy.

How do you get rid of roundworms in humans without medication?

Eat more raw garlic, pumpkin seeds, pomegranates, beets, and carrots, all of which have been used traditionally to kill parasites. In one study, researchers found that a mixture of honey and papaya seeds cleared stools of parasites in 23 out of 30 subjects. Drink a lot of water to help flush out your system.

Can you get roundworms from your dog licking you?

Yes, If you allow your dog to lick your face, there is a risk of getting a parasite. Hookworms, Roundworms, and the Giardia parasite can all be spread from dog to human through licking! You can also get several bacterial infections if you allow your dog to lick your face or damaged skin.

Can you poop out a worm?

Once inside the body, the tapeworm head attaches to the inner wall of the intestines and feeds off the food being digested. Pieces of the tapeworm break off and come out of the body in feces (poop), along with the eggs they contain. If this infected poop gets into soil or water, it can infect other people or animals.

Can worms cause stomach pain after eating?

In most cases, people experience pain and other stomach problems because the worms are damaging the tissue of the digestive tract, Fuchizaki said. But some people may be allergic to the worms, and experience an allergic reaction if they eat them, he said.

Do parasites cause weight gain?

While some parasites don't cause noticeable symptoms, some grow, reproduce or invade healthy functioning systems, making their hosts sick, resulting in parasitic infection. For instance, some parasites may consume your food and leave you hungry after meals, resulting in an inability to gain weight.

Do worms cause acid reflux?

Types of Worms – Strongyloides

Although rare, Strongyloides can remain in the body for decades which can cause heartburn, bloating and other symptons.

Can parasites cause dizziness?

The presence of parasites in the CNS may cause a variety of nerve symptoms, depending on the location and extent of the injury; the most common subjective symptoms include headache, dizziness, and root pain while objective symptoms are epileptic seizures, increased intracranial pressure, sensory disturbances, meningeal ...

What is the best worming tablets for humans?

Treatment. The most commonly used anti-worm products to treat intestinal worms (threadworms, roundworms and hookworms) are pyrantel, albendazole or mebendazole.

Can worms come up your throat?

Roundworms (Ascariasis)

Roundworms are common in warm places where there's poor sanitation. When a person swallows roundworm eggs, the worms hatch in the intestines. The young worms then go to the lungs. After a week or two, the worms go to the throat and often get swallowed again.