When a cat twitches, you first need to find the cause. If you occasionally experience one or two body tremors while sleeping, no medication or first aid is required. If it is caused by a neurological disease such as epilepsy, oral neurostabilizers are required. If the convulsions are indirect due to calcium deficiency, the cat needs to be supplemented with calcium during daily feeding. Of course, the fastest way to rescue a cat that has convulsions is to take it to a pet hospital as soon as possible for professional treatment.