These types of injuries affect the nerves that link the brain and spinal cord to nerves in other parts of the body.
Disease
Progressive supranuclear palsy
Learn about this brain condition that affects your ability to walk, move your eyes, talk and eat.
Disease
Hiccups
Caused by spasms of your diaphragm that you can't control, hiccups are usually harmless. Rarely, hiccups may be a sign of an underlying medical problem.
Disease
Fibromuscular dysplasia
Learn more about this condition that can narrow different arteries, including ones that supply blood to your kidneys, brain, heart or belly area.
Disease
Ruptured spleen
A break in the surface of your spleen, usually from a forceful blow to your abdomen, can cause life-threatening internal bleeding.
Disease
Baker cyst
This fluid-filled cyst occurs behind the knee and can be caused by arthritis or a cartilage tear. Treating the cause usually provides relief.
Disease
Yips
Learn about what causes these involuntary wrist spasms that often frustrate golfers.
Disease
Calciphylaxis
Learn more about this uncommon condition that affects small blood vessels and skin tissues, causing painful skin ulcers.
Disease
Hepatopulmonary syndrome
This lung condition causes low oxygen levels and shortness of breath in people who have advanced liver disease.
Disease
Auditory processing disorder (APD)
This type of hearing loss involves the brain. Learn about ways that can help people with the condition hear better.
Disease
Benign adrenal tumors
Most of these tumors need no treatment, but some do. Learn about diagnosis and treatment options.
Disease
Sleep disorders
Common types include insomnia, sleep apnea, restless legs syndrome and narcolepsy. Other types include nightmare disorder and sleep terrors.