Reye's syndrome is a rare but serious disease that most often affects children 6 to 12 years old. It seems to be related to the use of aspirin to treat some viral illnesses, such as chickenpox. Reye's syndrome primarily targets the brain and liver. Brain swelling and chemical changes in the blood from liver damage affect the entire body. Drowsiness, confusion, seizures, coma, and in severe cases, death may result.
The cause of Reye's syndrome is unknown. However, the disease most often develops in children who have recently had chickenpox (varicella) or flu (influenza) and who have also taken medications that contain aspirin. Reye's syndrome is not contagious.
The most important step you can take to prevent Reye's syndrome is to avoid giving aspirin or products that contain aspirin to anyone younger than 20 unless a health professional has specifically prescribed it.
