What are pinworms and how to treat them Children's Wisconsin
At Every Turn > Primary Care > Pinworms in kids: Don’t be frightened, they are common
Tips Feb 19, 2018

Pinworms in kids: Don’t be frightened, they are common

Landon Krantz, MD, Pediatrician Feb 19, 2018

Parents often find them gross. They freak out about them, and sometimes are even too embarrassed to ask the doctor about them. But don’t be frightened, they’re common!

I’m talking about pinworms. Pinworms are a form of intestinal parasite that look like pieces of dental floss. Up to half of kids, typically between ages 5 to 10, will get a pinworm infection at some point, according to the Centers for Disease Control and Prevention. It is the most common parasitic infection in the U.S.

What to watch for

The most common symptoms are an itchy bottom and restless sleep. The itching is worst at night because that’s when the worms crawl to the area around the rectum to lay eggs.

1

You’ll likely find the worms in the anal region a few hours after your child has fallen asleep or on your child’s underwear in the morning. You may also see them in the stool.

How the infection spreads

Parents often ask, “How did my child get this?”

When kids itch an infected area (often their bottom), the microscopic eggs end up on their fingers. And if they don’t wash their hands, contaminated fingers can carry the eggs to the mouth.

When kids ingest the eggs, the eggs go into the intestines and grow for about two to four weeks before becoming worms. The worms lay eggs near the anus, and the cycle repeats.

The microscopic pinworm eggs can also lurk on surfaces such as bed linens, towels, clothes, toilets, food, toys and school lunch tables. If one child gets an infection, there’s a good chance it will affect the rest of the family too.

How to treat pinworms

The good news is pinworms pose little danger and can be addressed quickly. Infected kids take one tablet to kill the worms and another in two weeks to kill the eggs. The treatment is almost 100 percent effective.

2

I recommend the whole household gets treated to prevent kids and adults from being re-infected with pinworms.

Prevention

Parents want to do everything they can to prevent pinworms, but unfortunately there’s no way to completely prevent all infections. Here are a few things you can do to decrease the chance of getting or spreading an infection:

  • Wash your hands often and remind your kids to do the same, especially before eating and after using the bathroom.

  • Wash your child’s pajamas every few days.

  • Clean toys and surfaces regularly.

  • Remind kids not to scratch around their bottom or bite their nails.

Landon Krantz Landon Krantz, MD Pediatrician Lakeside Pediatrics
Children’s Wisconsin has more than 20 primary care offices conveniently located throughout the Milwaukee area and southeast Wisconsin. Find a pediatrician near you. View more articles from Landon Krantz, MD

Related Stories

Winter safety Children's Wisconsin
Tips Nov 26, 2024

Cold comfort: Eight tips for keeping kids safe this winter

Pamela Schulz, DO Pediatrician

Winter in Wisconsin is great, but it brings some safety considerations to keep in mind.

Antibiotic overuse and resistance Children's Wisconsin
Tips Nov 20, 2024

Why antibiotics aren't always the answer

Katie Ray, PharmD Pharmacist

Antibiotics are one of the most commonly prescribed medications for children in the United States.

Healthy and happy Thanksgiving Children's Wisconsin
Tips Nov 07, 2024

Living mindfully during Thanksgiving and the holidays

Jean Cornell, MD Pediatrician

Activities and mindfulness will help you and your kids be your best selves during the holiday season.

Kid in puffy winter jacket
Tips Nov 06, 2024

Winter weather advisory: Why car seats and puffy coats are an unsafe mix

Anika Nelson, MD Pediatrician

It’s important to keep in mind that puffy winter coats affect how your child is secured in their car seat.

Are your kids ready for a sleepover Children's Wisconsin
Tips Nov 01, 2024

How to tell if your child is ready for a sleepover

Lori Albright, MD Pediatrician

Sleepovers can be exciting for many children, but ensuring your child is emotionally and socially ready for the experience is essential.

Attention deficit hyperactivity disorder (ADHD) Children's Wisconsin Center for Child Development
Tips Oct 30, 2024

Understanding ADHD

Erin Long, PhD Clinical Psychologist

About one in nine children in the United States is now diagnosed with ADHD, adding up to more than 7 million kids.

Vitamins and probiotics and kids Children's Wisconsin
Tips Oct 14, 2024

The ABCs of vitamins, minerals and probiotics

Matthew Maves, MD Pediatrician

Simplifying the complexities of vitamins and minerals so you can make informed choices for your child.