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What are Primary Generalized Tonic-Clonic (Grand Mal) Seizures?
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Primary generalized tonic-clonic (grand mal) seizures usually occur without warning and usually have two phases. At the beginning of the seizure, called the tonic phase, people experience:
- loss of consciousness
- muscle stiffness
- muscle contractions
In the second phase, called the clonic phase, people may:
- Experience repeated jerks of the body and head
- Bite their tongue, cheek, or lip
- Lose bladder control
The seizure may last from less than a minute to a few minutes. It is usually followed by drowsiness, confusion, headache, and sleep. People who have primary generalized tonic-clonic seizures could fall or become injured during the seizure. For some, it may take hours to feel better again.
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