Definition of "grand mal" []

• A severe form of epilepsy characterized by seizures involving spasms and loss of consciousness. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "When Liz Birt’s son, Matthew, was chelated, his condition seemed to worsen, and in one instance, chelation preceded a grand mal seizure."
• "If the possibility of grand mal seizure is high, the patient will also be sedated with chlordiazepoxide Librium, a tranquilizer, until the withdrawal symptoms subside."