Ependymoma is a rare type of tumor of the brain or spinal cord. It can happen in both children and adults. In children, these tumors tend to be in the brain. In adults, they are often in the spinal cord.

When something goes wrong with the muscles that direct swallowing, it's called dysphagia.

Dyshidrotic eczema is an ongoing (chronic) skin condition. It causes a burning, itching feeling. Severe cases may also cause a blistering rash.

Learn about dilated cardiomyopathy, including causes, risks, symptoms, diagnosis, treatment, and prevention.

Learn about diabetic ketoacidosis (DKA), a serious condition that can happen to some people with diabetes.

Choroid plexus papilloma (CPP) is a rare type of brain tumor. These tumors are usually not cancerous. This condition is most common in young children, but it can also occur in adults.

Catecholaminergic polymorphic ventricular tachycardia, or CPVT, is a rare genetic condition. It causes an irregular heart rhythm that can be life-threatening. It often shows up in childhood. Often the first sign is fainting or near fainting during exercise or strong emotion. Read on to learn more.

As HIV and AIDS battle your immune system, your central nervous system is also affected. HIV and AIDS both cause many neurological complications, particularly if HIV goes untreated and is allowed to progress to AIDS.

Polymyositis is a disease that causes muscles to become irritated and inflamed. The muscles eventually start to break down and become weak. The condition can affect muscles all over the body. It can make even simple movements hard to do. Polymyositis is 1 disease in a group of diseases called inflammatory myopathies.

Neuromyelitis optica (NMO) is a rare autoimmune disease that affects the central nervous system.