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Grief is a natural response to the loss of someone or something very important to you. The loss may cause sadness and may cause

Chronic obstructive pulmonary disease (COPD) weakens the structure of the lung and may also damage the tiny air sacs (alveoli) in

What is it? Alpha-1 antitrypsin (AAT) is a protein normally found in your lungs, liver, and blood. It helps protect tissues in

Discusses infection of the heart's valves or inner lining (endocardium). Covers cause by bacteria (bacterial endocarditis) or

If you have a health condition that makes you tired, or if you're recovering from illness or injury, here are some ideas for

What is a molar pregnancy? A molar pregnancy means that tissue that normally becomes a fetus instead becomes a mass of abnormal

What is developmental hip dysplasia? Developmental dysplasia of the hip (DDH) is a problem in a baby's hip joint. It may also be

Discusses attention deficit hyperactivity disorder (ADHD), which in the past was called attention deficit disorder (ADD). Covers

An alpha-fetoprotein (AFP) blood test checks the level of AFP in a pregnant woman's blood. AFP is a substance made in the liver of

What is tinea versicolor? Tinea versicolor (say "TIH-nee-uh VER-sih-kuh-ler") is a fungal infection that causes many small, flat