Seizure
A seizure is when abnormal electrical activity takes place in the brain, which may produce a sudden, violent, and uncontrollable contraction of a group of muscles (convulsion). Seizures can also manifest as an alteration in mental status, body sensation, or lack of consciousness. They can be very subtle such as a strange sensation of the body, and visual disturbance, or they can be very violent requiring hospitalization. Some things that can evoke seizures include brain injury, drug usage, drug toxicity, fever, or brain lesions. Seizures are classified by whether or not it is localized within the brain or distributed; these are respectfully called focal and general seizures