Learn about acne with this multiple-choice quiz. You'll learn, for example, which factors promote blackheads.

Addiction to drugs or alcohol can happen to anyone of any age, social status, race, or income level. Find out more by taking this quiz.

Allergies are nothing to sneeze at. Learn how to better deal with this condition.

Many people swear by alternative and complementary therapies. Find out more about these treatments by taking this quiz.

Aplastic anemia is a rare blood disorder that affects the growth of blood cells. "Aplastic" means "lack of growth."

The human appendix is a three- to six-inch narrow tube located where the small and large intestines join. It's mostly known for becoming inflamed, affecting thousands of Americans each year. If you want to learn more about the appendix, take this quiz.

Assess your knowledge of the asthma basics with this quiz.

Do you know tobacco smoke's effect on asthma? What about asthma's effect on pregnancy? Find out the answers to these and other questions by taking this quiz.

Are you a parent of a child with asthma? Take this quiz and stop feeling guilty.

The itching caused by athlete's foot can be intense. Named for the active people who seem most prone to this condition, athlete's foot can affect even couch potatoes. Find out more by taking this multiple-choice quiz.