Impetigo is an infection of the outer layer of the skin. It's most often caused by certain bacteria. Impetigo is much more common in children, but adults can get it too. Learn details about causes, symptoms, and treatment.

A buildup of earwax is called impacted earwax. It can cause symptoms, such as hearing loss. Impacted earwax is very common. With age, earwax tends to become harder and less mobile. Older adults are more likely to have problems with excess earwax.

Iliotibial band syndrome (often called IT band syndrome) is a health problem that causes pain on the outside of the knee. It mostly commonly happens in athletes, especially distance runners, or those new to exercise. Read on to learn more.

Hypertrophic cardiomyopathy (HCM) is a disease that causes thickening (hypertrophy) of the heart muscle. The heart cells enlarge more than they should, and scarring is often found between the cells.

Herpes eye disease is a group of eye disorders caused by infection with the herpes simplex virus (HSV).

After a heart transplant, the immune system can see the new heart as a foreign object and start to attack it. This is called transplant rejection. Learn more about transplant rejection, including causes, risks, symptoms, diagnosis, treatment, and prevention.

Glioblastoma multiforme (GBM) is the most common brain tumor in adults. Treatment is aggressive and involves surgery, radiation, and chemotherapy.

Ehrlichiosis is an illness caused by bacteria that’s spread by ticks. The illness causes fever, muscle aches, and other symptoms. Read on to learn more information.

Ectropion is a sagging or outward turning of an eyelid. It usually affects a lower eyelid. It often affects both lower eyelids. But in some cases it only affects one side.

Pressure differences between the inside of the ear and the outside of the ear can cause ear barotrauma or ear damage. It can cause pain and sometimes permanent hearing loss. It can be caused by scuba diving, air travel, or exposure to an explosion.