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Grand Mal Seizure
A grand mal seizure causes a loss of consciousness and violent muscle contractions. It's the type of seizure most people picture when they think about seizures. A grand mal seizure — also known as a generalized tonic-clonic seizure — is caused by abnormal electrical activity throughout the brain. Usually, a grand mal seizure is caused by epilepsy. But sometimes, this type of seizure can be triggered by other health problems, such as extremely low blood sugar, a high fever or a stroke. Many people who have a grand mal seizure never have another one and don't need treatment. But someone who has recurrent seizures may need treatment with daily anti-seizure medications to control and prevent future grand mal seizures
This video in 30 seconds
This video explains grand mal seizures, also known as generalized tonic-clonic seizures. It describes a grand mal seizure as causing loss of consciousness and violent muscle contractions, caused by abnormal electrical activity throughout the brain, usually by epilepsy but sometimes triggered by other problems such as extremely low blood sugar, high fever or stroke, and notes that people with recurrent seizures may need daily anti-seizure medication.
Key points
- A grand mal seizure is described as causing loss of consciousness and violent muscle contractions
- Abnormal electrical activity throughout the brain is given as the cause
- Epilepsy is described as the usual cause, with low blood sugar, high fever and stroke as other triggers
- Daily anti-seizure medication for recurrent seizures is mentioned
Video Overview
This video presents “Grand Mal Seizure” — A grand mal seizure causes a loss of consciousness and violent muscle contractions. It's the type of seizure most people picture when they think about seizures. A grand mal seizure — also known as a generalized tonic-clonic seizure. Whether you are preparing for a procedure, studying the technique, or learning how a condition is assessed, the recording shows the process as it is performed in practice.
From our Neurology collection: Stroke, epilepsy, Parkinson's, dementia and nerve disorders — examinations and treatments explained by neurologists. Browse all Neurology videos →
Educational content only — not a substitute for professional medical advice.
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