What should you know about focal clonic seizure?

The seizure starts in a limited area of the brain. One hand, arm, leg, face, or side of the body may jerk in a steady pattern. The movement can spread, and the person may remain able to respond or may become confused. A single event does not establish epilepsy. Possible triggers or causes include low blood glucose, alcohol withdrawal, infection, head injury, or another neurological problem; identifying the context matters.

Move nearby hard or sharp objects away, cushion the head, loosen tight clothing around the neck, and note when the movement starts. Do not restrain the person, put anything in the mouth, or offer food, drink, or medicine until they are fully alert. Stay with them and speak calmly. When safe, turn them on their side and keep the airway clear.

Call emergency services if the seizure lasts five minutes or longer, repeats without recovery, causes a serious injury, affects breathing, happens in water, or occurs during pregnancy. Urgent assessment is also needed with fever, severe headache, stiff neck, sudden weakness, or suspected low blood glucose. After a first seizure, arrange prompt medical evaluation even if recovery is complete.

Ask what might have triggered the event, whether blood glucose or other tests are needed, and whether a neurology assessment is appropriate. Discuss driving, bathing, work hazards, an emergency plan, and how a witness should record future episodes.