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An abscess is a pocket of infection. In the brain, an abscess may be in one or more areas. This condition may cause problems with how the brain and spinal cord function. It is a serious and life-threatening condition that needs to be treated right away.

An electroencephalogram (EEG) is a test that measures the electrical activity in the brain (brain waves). Small, round discs with wires (electrodes) are placed on the scalp during the test. The electrodes are not painful to your child.

Guillain-Barré syndrome (GBS) is a short-term but often life-threatening disorder that affects the nerves in the body. GBS can cause muscle weakness, pain, and short-term (temporary) paralysis of the facial, chest, and leg muscles.

The most common symptoms of nervous system disorders in children include delays in developmental milestones, an increase or lack of growth in head size, and a lack of coordination.

Slipped capital femoral epiphysis (SCFE) is a condition of the hip joint that affects children. In SCFE, the ball of the thighbone (femoral head) slips off the neck of the thighbone.

West Nile fever is an illness caused by a virus. The virus is spread by mosquito bites. It often causes mild, flu-like symptoms.

Rotavirus is a contagious virus that causes nausea and diarrhea. Learn about the causes, symptoms, treatment, when to contact your doctor, and more.

Tourette syndrome (TS) is a neurological disorder that causes repeated tics. Tics are sudden, uncontrolled vocal sounds or muscle jerks. Symptoms of TD often begin between ages 5 and 10. Read this to learn more about TD in children.

Neurocutaneous syndromes are disorders that affect the brain, spinal cord, organs, skin, and bones. The diseases are lifelong conditions that can cause tumors to grow in these areas. They can also cause other problems, such as hearing loss, seizures, and developmental problems.