Grand Mal Look up grand mal in Wiktionary, the free dictionary. Grand Mal may refer to: Grand Mal (New York City band), an alternative rock band Grand Mal (San Francisco band), a punk rock band Grand mal seizure, a seizure that affects the entire brain Topics referred to by the same term This disambiguation page lists articles associated with the title Grand Mal.If an internal link led you here, you may wish to change the link to point directly to the intended article.