Facial muscle atrophy is mainly caused by cranial nerve or nerve nucleus lesions, and its early symptoms are related to the atrophic parts, as follows: 1, expression muscle atrophy: manifested as blinking, mouth activity disorders, the appearance of the cheeks collapsed; 2, biting muscle atrophy: manifested as a decrease in the force of the bite; 3, pharyngeal atrophy: manifested as a choking on drinking water, unable to swallow hard food or choking into the trachea, can also be referred to as a ballooning paralysis. Due to the head and face of the muscle atrophy symptoms are more subtle, patients can not be found on their own, need to be examined by a doctor can be clear.