grand mal seizure n.
A sudden attack or convulsion characterized by generalized muscle spasms and loss of consciousness; it is recurrent in grand mal.
The first time she cut back on her medications, she had a grand mal seizure in her bathroom and knocked out her front teeth.
Eleanor suffered her first grand mal seizure during a camping trip in 2005 and was diagnosed with brain cancer that year.
She evidenced particular tenderness in describing a woman cradling a fellow inmate who had just suffered a grand mal seizure.
Could the (thus far) timid trembling give way to a full-on, grand mal seizure?