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Follow these directions to do a wrist pronation exercise.

Compartment syndrome most often affects the legs, arms, feet, hands, and buttocks. It is a medical emergency that should be treated right away.

Malaria is caused by a parasite passed on through a mosquito bite. Malaria is rare in the U.S., but travelers are at risk for this disease.

A sudden injury can tear the meniscus. This is often because of planting the foot and twisting the knee. Sports, such as soccer, football, and basketball, are often involved.

A bruise occurs when small blood vessels break open and leak blood into nearby tissues. Learn about treatment for a bruised liver.

People who have irritable bowel syndrome (IBS) have digestive tracts that react abnormally to certain substances or to stress. This leads to symptoms like cramps, gas, bloating, pain, constipation, and diarrhea.

People who don't have asthma may not know how it makes you feel. Try not to get angry with them. Instead, help them learn more about asthma. If you're afraid to speak up, ask your parents what words to say. Here are some things you can say to your family, friends, teachers, and other adults.

Pneumonia is an infection of one or both of the lungs. Read on for information about pneumonia treatments and caring for yourself at home.

When you breathe, air travels through passages in your nose and throat. When these air passages are wide enough to let air flow freely, you breathe normally. Here are images of the nasal and throat passages.