Perimenopause is the time around menopause when your body begins to change. You become less fertile and hormone levels fluctuate.

If your healthcare provider thinks you might have melanoma, you will likely need certain exams and tests to be sure.

Detailed information on skin cancer prevention, including protecting children from the sun.

Detailed information on actinic keratosis, including causes and treatment.

Menopause is when a person permanently stops having menstrual periods. Learn more about menopause, including symptoms and treatments.

It's important to learn the symptoms of respiratory distress to know how to respond the right way.

Work-related lung diseases are lung problems that are made worse in certain work environments. They are caused by long-term exposure to certain irritants that are breathed into the lungs. These lung diseases may have lasting effects, even after the exposure ends. Read on for more details.

Depression is a whole-body illness. It involves the body, mood, and thoughts. Depression affects the way you eat and sleep. It also can affect the way you feel about yourself and things. It is not the same as being unhappy or in a "blue" mood. It is not a sign of personal weakness or a condition that can be willed or wished away. When you have depression, you can't "pull yourself together" and get better. Treatment is often needed and many times crucial to recovery.

Emphysema is a chronic lung condition in which the air sacs (alveoli) may be destroyed, narrowed, collapsed, stretched, or overinflated. Pulmonary emphysema is part of a group of lung diseases called COPD. Here's what you need to know.

Certain tests and screenings may be scheduled during your pregnancy. Your healthcare provider will advise you on which tests you'll need.