The corners of the mouth not being the same height may be normal, or it may be caused by poor chewing habits, temporomandibular joint disorders, facial paralysis, stroke and other reasons.
If the corners of the mouth are not the same height since childhood, and the difference between the two sides is not big, and there is no abnormal symptom, then it may be caused by congenital genetic factors, which is a normal phenomenon. In addition, if the daily habit of unilateral chewing, resulting in both sides of the chewing muscle asymmetry, thus causing bilateral corners of the mouth are not the same height.
Pathological condition is commonly caused by mental tension, trauma, opening the mouth too much and other reasons leading to temporomandibular joint dysfunction, pain when opening the mouth and chewing, may appear the corners of the mouth are not the same height. Facial nerve paralysis due to cold, viral infection, neuritis, etc., which causes the facial muscles to lose their constraints, resulting in the corners of the mouth not being the same height, or accompanied by the symptoms of tilted mouth and eyes.
It can also be seen in stroke, mostly due to high blood pressure, heart disease, aneurysm, meningitis and other diseases, resulting in localized obstacles to blood circulation in the brain, resulting in cerebral nerve ischemia, damage, loss of muscle control, resulting in the corners of the mouth are not the same height, mostly accompanied by salivation (drooling), numbness of the limbs, hemiparesis and other symptoms.
Attention: If the degree of the mouth angle is not the same height is more serious, has seriously affected the daily life; or appeared in the mouth and eyes skewed, limb hemiplegia and other symptoms, need to consult a doctor in a timely manner.