A brain cyst is a fluid-filled sac in the brain. They can be noncancer (benign) or cancer (malignant).

A boxer's fracture is a break in the neck of the fifth metacarpal bone in the hand. It gets its name because the injury is common in inexperienced boxers.

A bone bruise is a traumatic injury to a bone that is less severe than a bone fracture.

An intestinal blockage interrupts the normal digestive process. Many possible causes can lead to intestinal blockage including scarring, a hernia, or tumors.

Benign paroxysmal positional vertigo (BPPV) is a disease of the vestibular system of your inner ear. When you change your head position, it causes vertigo. Vertigo is a feeling that the room is spinning around you.

Behcet disease is a type of autoimmune disease. It causes inflammation of blood vessels. It’s a rare disease in the United States, but it is more common in the Middle East and Asia. It’s more common in people in their 20s to 40s, but it can happen at any age.

A Baker cyst (popliteal cyst) is a fluid-filled sac that forms behind the knee.

Peripheral neuropathy is a type of damage to the nervous system.

Bacterial endocarditis is a bacterial infection of the inner layer of the heart or the heart valves. Read on to learn about the cause, symptoms, diagnosis, and treatment.

Aspiration is when something enters your airway or lungs by accident. It may be food, liquid, or some other material. This can cause serious health problems, such as pneumonia. Aspiration can happen when you have trouble swallowing normally. This is called dysphagia.