What should you do if someone is having a siezure next to you?

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.