Almost everyone has had a headache at one time or another. Some are mild and end quickly; others can be bad enough to keep you in bed for two or three days at a time.
A concussion is an injury to the brain caused by a blow to the head, or by striking the head on another object. It may result in loss of consciousness or confusion, but the effects usually resolve in a few hours or days. This video explains what happens during a concussion, how it should be treated, and what preventive steps to take.
Febrile seizures are seizures that occur during a fever. They are one of the most common nervous system problems of childhood. They typically appear between 6 months and 3 years of age. This video looks at the possible causes, typical symptoms, and what you should do as a parent.
An arachnoid cyst is a fluid-filled sac of the brain or spinal cord. It forms between the brain or spinal cord and the arachnoid membrane. An arachnoid cyst contains cerebrospinal fluid (CSF). These cysts appear most often in children, but they may also occur in adults.