Learn more about this diarrhea-causing infection that often occurs after antibiotic use. Many, but not all, people who get it are in health care facilities.
Disease
Carotid artery disease
Learn about this condition that can lead to a stroke, how it's treated and ways to prevent it.
Disease
Castleman disease
This rare disorder involves an overgrowth of cells in your body's lymph nodes. Treatment varies depending on how many lymph nodes are involved.
Disease
Cavities and tooth decay
These areas in the hard surface of your teeth are tiny openings or holes due to damage from tooth decay. This can lead to pain, infection and tooth loss.
Disease
Celiac disease
In this digestive condition, gluten in food damages the small intestine, making it hard to absorb nutrients and causing a variety of symptoms.
Disease
Cervical dystonia
This rare movement disorder causes neck muscles to contract involuntarily. This can make your head twist or turn into often painful positions.
Disease
Chagas disease
Learn more about this easily spread disease caused by a parasite.
Disease
Charcot-Marie-Tooth disease
Learn how to spot the symptoms and how doctors treat this group of peripheral nerve disorders.
Disease
Cholangiocarcinoma (bile duct cancer)
Learn about symptoms, risk factors, diagnosis and treatment, including transplant, for this rare cancer that affects the bile ducts of older adults.
Disease
Chronic daily headaches
If you have a headache most days, you might have one of the most disabling headache conditions, chronic daily headaches. Aggressive treatment and long-term management might help.
Disease
Chronic granulomatous disease
Learn about this inherited disease, usually diagnosed in childhood, that makes it difficult for your body to fight infections.
Disease
Chronic kidney disease
Learn about kidney failure symptoms, tests, diagnosis and treatment options, including medication, dialysis and kidney transplant.