When a baby sleeps with a fever, a shiver is likely to be a fever-induced chill reaction, not a convulsion. Because the convulsions are not shaking, the convulsions have characteristic clinical manifestations, which are mainly convulsions, mainly two eyes rolled up, the corners of the mouth outward, the limbs like tonic twitching. Unlike tremors, which can’t be relieved, tremors sometimes have a lower frequency and smaller amplitude and can be relieved. But the convulsions are often tonic limbs, eyes rolled up, accompanied by the performance of respiratory hypoxia, causing the lips to turn purple, called febrile convulsions. But when fever sleep shaking should pay attention to whether the body temperature is rapidly going up the chills response, if not promptly reduce the fever, it may lead to the generation of febrile convulsions.