A to Z: Seizure, Grand Mal

A to Z: Seizure, Grand Mal

A to Z: Seizure, Grand Mal

May also be called: Tonic-Clonic Seizure

A grand mal seizure is a sudden attack that brings on intense muscle spasms and loss of consciousness. It is caused by abnormal electrical activity in the brain and affects the entire body.

More to Know

A grand mal seizure can happen at any age. It's most commonly associated with epilepsy but can also be caused by low blood sugar, stroke, infections, traumatic head injuries, drug and alcohol withdrawal, and other underlying conditions. It can be a one-time or recurring event.

Often, an aura (vision, taste, smell, or sensory changes) will signal an oncoming seizure.

A grand mal seizure occurs in two phases and usually only lasts for a few minutes. First, loss of consciousness occurs. This is followed by convulsions, or violent muscle contractions. The person may also bite the cheek or tongue, lose bladder or bowel control, clench the teeth or jaw, or have a blue skin color.

Following the seizure, a person will probably be sleepy and confused with no memory of the event. A severe headache afterward is also common.

Keep in Mind

Anyone experiencing a grand mal seizure should seek medical help. Treatment will depend upon the cause and often includes the use of anti-seizure medications.

While medications can minimize the effects of seizures, living with chronic seizures can still be frightening and disruptive to daily life. Support groups and online forums are valuable resources for people with epilepsy and other seizure disorders.

All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.





Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.

© 1995-2014 The Nemours Foundation/KidsHealth. All rights reserved.





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OrganizationNational Institute of Neurological Disorders and Stroke (NINDS) NINDS offers research information related to neurological disorders.
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