Radiculopathy, commonly called pinched nerve, often occurs in the low back.

Monoclonal gammopathies are conditions in which abnormal proteins are found in the blood.

Granulomatosis with Polyangiitis (GPA) is a condition of the immune system. It causes swelling and irritation in blood vessels and other tissues.

Immunotherapy is a treatment that uses the body's immune system to help treat or prevent health problems. Learn about the uses of immunotherapy.

When your body is unable to remove waste in the normal way, you may need an ostomy. This is an opening that is created surgically somewhere on the body to help the body get rid of stool or urine.

Made up of bundles of nerves, the spinal cord carries signals from your body to your brain, and vice versa.

Frontotemporal dementia (FTD), a common cause of dementia, is a group of disorders that occur when nerve cells in the frontal and temporal lobes of the brain are lost. This causes the lobes to shrink. FTD can affect behavior, personality, language, and movement.

Cephalic disorders affect the central nervous system as it develops. They may also affect the brain and the growth of the skull.

A developmental venous anomaly is an unusual arrangement of small veins in the brain or spinal cord. It's a condition you are born with.

Arteriovenous malformations is the abnormal formation of veins and arteries. It can develop in the fetus or newborn baby. Learn more about this condition, including causes, diagnosis, and treatment.