A seizure is a sudden, uncontrolled electrical disturbance in the brain that can cause changes in behavior, movements, feelings, or consciousness. Seizures can vary in intensity and duration, ranging from brief lapses of attention to full-body convulsions. They are often associated with conditions like epilepsy, but can also result from factors such as head injuries, infections, or high fever. During a seizure, the brain's normal electrical activity is disrupted, leading to symptoms that may include shaking, confusion, or loss of awareness. After a seizure, individuals may experience a period of confusion or fatigue, known as the postictal state. Treatment options include medications and lifestyle changes to help manage and reduce the frequency of seizures.