These tiny insects can live in your hair and Skin and drink blood from your scalp. They’re generally not dangerous, just itchy and contagious. They’re common in elementary school kids. You can buy shampoos over the counter that kill them, and your doctor can tell you about prescription ones. You’ll need to use a wet fine-tooth comb on your hair to get rid of them.

Even if you do, they can lay eggs, too. If they hatch, you’ll itch all over again.


Don’t worry. It’s not really a worm at all. It’s a fungus that can infect just about any part of your body. On your head, it could cause hair to fall out in the distinct ring pattern that gives it its name. On your feet, it’s called athlete’s foot, and in your crotch area, it’s jock itch.

Your doctor or pharmacist can help you get rid of it with antifungal creams, sprays, powders, or pills.


This is rare in the U.S., but hookworm larvae — usually found in Asia, Africa, and the Middle East — can enter your skin, often when you walk barefoot on soil that has infected poop. They live in your gut, aren’t generally dangerous, and often go away without treatment.

The creature can make you itchy and red where it went into your skin. You may also cough, wheeze, and have stomach pain.

Talk to your doctor if you think you have it.


You can get this parasite from infected beef, pork, or fish. If you have it, you’ll probably see tiny eggs and pieces of the worm in your poop.

A worm can grow to 30 feet long inside you and cause diarrhea, cramps, and weight loss.

Your doctor can give you drugs to get rid of it. Early treatment is important because it could lead to brain cysts that can cause headaches, seizures, and confusion. It can also bring life-threatening disease.

Face Mites

Also known as demodex, they’re basically tiny spiders you pick up as you age. By age 60, you’ve got a couple of thousand of the little guys living on your face. You can’t see them because they’re only about a third of a millimeter long and see-through.

They’re not anything to worry about. All they want is to eat some dead skin cells and a bit of the oil that comes along with them.


The aptly named “human itch mite” uses its eight legs to burrow into the top layer of your skin to feed in your groin, armpits, between your fingers or toes, or under your belt.

Your body responds with an itchy rash. You might get it from another person if you touch their skin, or from sheets, clothes, or furniture. Your doctor can tell if you have it, and prescription drugs can get rid of it. Wash bedding and clothes to finish the job.


These are tiny little parasites that live in your gut. You can get them if you swim or drink from some streams and lakes. You might also get them from hot tubs, well water, swimming pools, contaminated food, and contact with an infected person.

Giardia can give you cramps, gas, weight loss, sulfur-smelling burps, and foul-smelling diarrhea. Then again, you may not have any symptoms.

Bellybutton Bacteria

In the folds of your navel, glands make sweat, oil, and other things that attract some bacteria and repel others. Some of these might make you sick in other places. But here, they could help fight off more dangerous germs. Things like your gender, your body makeup, where you live, and your genes can determine which bacteria — and how much of it — you’ll have.

An overgrowth of candida in your mouth is called thrush.

Candida: The Fungus Among Us

This thrives in dark, warm, moist places like your mouth, the folds of your skin, and your crotch. It causes a rash of dry, itchy, swollen skin. In your mouth, it could grow too much and cause patches of itchy white bumps on your tongue, throat, or inside your cheeks. You may hear your doctor call that “thrush.” It can be treated with antifungal drugs.

Organisms in your intestines make up the gut microbiome.

Gut Microbiome

Most of the trillions of microscopic things that live in and on your body are inside your gut. They interact with your diet, your body, and the outside environment. Researchers are still figuring out how.

Mouth Creatures

A delicate balance of bacteria, fungi, and viruses live in your mouth all the time. Problems like cavities or sores can start when that balance gets thrown off. This can happen because of things like dry mouthdiabetes, or a weak immune system.

Lactobacilli bacteria

A fine balance and variety of microscopic creatures live inside the vagina. They’re thought to be the first line of defense against other microbes that could give you smelly vaginal discharge and itch. Lactobacilli bacteria, in particular, promote vaginal health because they help keep acid levels just right. This can help prevent bacterial vaginosis and yeast infections.

Armpit Microbiome

The balance of creatures in your mouth and gut aren’t the only ones that matter. Even your armpits have a microbiome that’s part of the reason for the odor that comes from there. The mix is often dominated by “staph” bacteria that is thought to fight off other germs. But the mix changes drastically if you use antiperspirant.


What are 3 lifeforms that live on your skin?

There are two species of mite that live on your face: Demodex folliculorum and D. brevis. They are arthropods, the group that includes jointed-legged animals such as insects and crabs. Being mites, their closest relatives are spiders and ticks.

How many creatures live on your body?

Now, scientists have unveiled the first survey the “human microbiome,” which includes 10,000 species and more than 8 million genes.

Do skin mites live in your pores?

It might give you the creepy-crawlies, but you almost certainly have tiny mites living in the pores of your face right now. They’re known as Demodex or eyelash mites, and just about every adult human alive has a population living on them.