Health Topics A-Z

Gout is a type of inflammatory arthritis that causes pain and swelling in your joints, usually as flares that last for a week or two and then resolve.

Guillain-Barré syndrome (GBS) is a rare neurological disorder in which the immune system mistakenly attacks part of the peripheral nervous system.

Gum disease, also called periodontal disease, is an infection that causes inflammation of the tissues that hold your teeth in place. It causes swollen, red, or bleeding gums and is the most common cause of tooth loss among adults.

Human immunodeficiency virus (HIV) is the virus that causes HIV infection. Without treatment, HIV can progress to acquired immunodeficiency syndrome (AIDS), the most advanced stage of HIV infection.

Huntington's disease is an inherited neurological condition that causes nerve cells in the brain to gradually stop working properly and die. This leads to problems with movement, behavior, emotion, thinking, and personality.

Infections happen when germs invade and grow inside the body. When the body’s response to an infection gets out of control, it can lead to a life-threatening condition called sepsis.

Infertility is when a person, or a couple together, is unable to become pregnant or can become pregnant but cannot carry a pregnancy to term.

Influenza, also known as the flu, is a highly contagious respiratory illness caused by influenza viruses that infect the nose, throat, and lungs. Each year, influenza causes millions of illnesses worldwide.

People with insomnia have trouble falling asleep, staying asleep, or getting good-quality sleep.

Irritable bowel syndrome (IBS) is a common digestive condition that causes abdominal pain and changes in bowel movements over a long period of time. It affects both adults and children and is also called a disorder of gut-brain interaction.