He was 16 when he suffered his first grand mal epileptic seizure.

16岁时他第一次癫痫大发作。

youdao

Epilepsy is a common disease, epilepsy seizure types can be divided into grand mal epilepsy, petit mal epilepsy, psychomotor seizures, the limitations of seizures and complex partial seizures.

癫痫病是一种常见的疾病，癫痫病的发作类型大致可分为癫痫大发作、癫痫病小发作、精神运动性发作、局限性发作和复杂部分性发作。

youdao

On a long drive without any alcohol available, you had a grand mal seizure and freaked out your buddies.

FORBES: Dear Dad, With Love