Seizures can take on many different forms, and seizures affect different people in different ways. Anything that the brain does normally can also occur during a seizure when the brain is activated by seizure discharges. Some people call this activity “electrical storms” in the brain.Seizures have a beginning, middle, and end. Not all parts of a seizure may be visible or easy to separate from each other. Every person with seizures will not have every stage or symptom described below. The symptoms during a seizure usually are stereotypic (occur the same way or similar each time), episodic (come and go) and may be unpredictable.
Some people are aware of the beginning of a seizure, possibly as much as hours or days before it happens. On the other hand, some people may not be aware of the beginning and therefore have no warning.
Some people may experience feelings, sensations or changes in behavior hours or days before a seizure. These feelings are generally not part of the seizure, but may warn a person that a seizure may come. Not everyone has these signs, but if they do, the signs can help a person change their activity, make sure to take their medication, use a rescue treatment and take steps to prevent injury.