Celiac disease is a digestive disease that can affect children and adults alike. Also known as celiac sprue ("sprue" means you can't absorb nutrients from food), this disease is the most common genetic disease in Europe and is considered significantly underdiagnosed in the United States. Learn more about the disease by taking this quiz.

There are millions of pet cats in the U.S. Sometimes cats can cause an illness called cat scratch disease. Find out more about this illness by taking this quiz.

True or false: If someone is following your car too closely, you should gently tap your brakes as a warning.

The carpal tunnel is a pathway inside your wrist that carries the median nerve from your arm to your hand. Carpal tunnel syndrome is a condition that affects your hand. Test your knowledge of carpal tunnel syndrome by taking this quiz.

Is there a link between heavy caffeine consumption and osteoporosis? Find out when you take this quiz.

Burns can occur anytime of year, but the summertime can hold special hazards because many of us are outdoors doing yard work, grilling or boating. More than a million burn injuries occur each year, Introduction: What Do You Know About Burns?

Did you know that untreated bunions may lead to arthritis? Take this quiz and find out how to take care of your feet.

Botulism is rare, but extremely dangerous. This quiz will help you learn how to make sure the food you eat is safe.

Although millions of Americans have balanced disorders, they can be difficult to diagnose. That's because dizziness--a common symptom--is such a broad term.

Test your knowledge of these serious—and mysterious—class of diseases.