When a swimmer comes in contact with them, the parasites can burrow into the skin. The result is a rash that can cause small pimples. Identifying the difference between a chlorine rash and swimmer ...

If you already have HIV, you may have a weakened immune system, which makes you and your skin more vulnerable to infections from bacteria, viruses, and parasites, which can cause an HIV rash.

Bedbugs are sneaky creatures. They typically bite while you're asleep. And the itchy, red marks they leave behind will often ...

Scratching where it itches reduces the presence of potentially harmful bacteria on the skin, studies in mice show.

These animals serve as the hosts for the life cycle of the schistosome, although the parasite will enter the human skin, causing an irritating or allergic rash as it dies. Not all species of ...

Tick bites can look very different from person to person, Dr. Melissa Levoska, an assistant professor of dermatology at the ...

Ringworm has a long incubation period. The red rash can actually take a few days to appear on your skin. If you have ringworm of the scalp, you may not see any signs for a full two weeks after ...

Canine hookworms are becoming an increasing threat to pets and people, researchers say, after finding that the parasites have developed widespread drug resistance in both North America and Australia.

Coming across such unwelcome guests—in our hair, on our skin or in our beds—can be a real nightmare. Some parasites cause horrific deformities and diseases, maiming and killing millions of ...