Rheumatoid arthritis is an autoimmune disorder, which means your immune system attacks your body—in this case, your joints. Learn more about medicines to treat this condition.

Cluster headaches -- called cluster because of their pattern of striking in groups or clusters -- hit at the same time of day for a period of weeks or months, then vanish as suddenly and as mysteriously as they appeared.

You have a number of tools at your disposal for better managing the symptoms of Parkinson’s disease and living a healthy, enjoyable life.

Ulcerative colitis is a chronic illness that happens when your body's immune system attacks your digestive tract. Read on to learn about symptoms and treatment options.

Learn about what to do if you or a child has nausea or vomiting.

A medicated nasal decongestant spray may offer fast relief when your nose is congested and running. But using them for too long can cause problems. Learn about some other options, as well as how to treat young children.

For some people, taking medicine every day can help prevent migraines and make them less painful when they occur.

Having a child with diabetes can be overwhelming. Fortunately, a team of experts can guide you now and in the years to come.

Recent studies have found that people who take proton pump inhibitors are significantly more likely to break their hipbone or any other bone.

People with tinnitus hear a constant ringing in their ears. Learn more about this condition, including causes and treatment.