The symptoms of seizures can be varied, mainly because the site of abnormal discharge and the related conduction mode are different, thus causing various clinical symptoms, but there are still some commonalities. The most common forms of grand mal seizures, such as sudden loss of consciousness, coma, generalized tonicity and convulsions, foaming at the mouth, incontinence, sometimes accompanied by tongue bite, usually last less than five minutes and can occur several times a day. There are some forms of petit mal seizures, for example, the sudden suspension of movement, staring, and not responding to calls, which is called a fugue seizure. There is also a sudden unilateral or bilateral muscle contraction for a long time, or intermittent involuntary contraction, which can be described as a sudden jerking of the hand, similar to an electric shock, which is called a tonic or clonic seizure. There is also the opposite process, a sudden loss of muscle tone that causes a limb to fall or a fall, which is called an atonic seizure. There are also types of seizures that are mixed and cannot be explained in one way or another. Therefore, there are various clinical signs and symptoms of seizures, and once you suspect that there is a relevant occurrence, you need to go to the hospital for relevant examination and diagnosis in time.