Numbness of the corners of the mouth is considered to be related to trauma, and may also be caused by allergies, trigeminal neuritis and other factors.
1. Trauma: If the corners of the mouth are hit by external force, it may lead to skin damage and poor blood circulation, so the corners of the mouth will become numb.
2. Allergy: If you come into contact with allergy-prone substances, an allergic reaction may lead to numbness at the corners of the mouth, and itching, rash and other symptoms may also occur.
3. Trigeminal neuritis: If trigeminal neuritis occurs, nerve dysfunction, conduction obstruction, numbness of the corners of the mouth may occur.
If the frequent occurrence of numbness at the corners of the mouth may also have other causes, need to pay attention to, and actively seek medical examination and treatment.