Seizures are changes in the brain’s electrical activity. These changes can cause dramatic, noticeable symptoms, or in other cases no symptoms at all. Seizures can stem from a number of health conditions. Anything that affects the body also may disturb the brain and lead to a seizure. Some examples include:alcohol withdrawal, a brain infection, such as meningitis, a brain injury during childbirth, a brain defect present at birth, choking drug abuse, drug withdrawal, an electrolyte imbalance, electric shock, epilepsy, extremely high blood pressure, a fever, head trauma, kidney or liver failure, low blood glucose levels, a stroke, a brain tumor, vascular abnormality in the brain.