What causes numbness of the lips?
Jan 23, 2025
Source: Cainiu Health
Dr. Lv Zhiqin
Introduction
In general, lip numbness may be caused by cold stimulation, psychological factors, vitamin B12 deficiency, facial nerve paralysis, diabetes, or other reasons, and symptomatic treatment such as general care and medication may be needed. It is recommended to maintain oral hygiene in daily life, rinse the mouth with warm water after meals, brush teeth at least twice daily, reduce bacterial growth in the mouth, and prevent infections that may cause lip numbness.
Generally, lip numbness may be caused by cold stimulation, psychological factors, vitamin B12 deficiency, facial nerve paralysis, diabetes, and other factors. Symptomatic treatment through general therapy, medication, and other methods may be needed. If discomfort occurs, it is recommended to seek medical attention promptly and undergo appropriate treatment under a doctor's guidance. Detailed explanations are as follows:
1. Cold Stimulation
Cold stimulation can slow local blood circulation and inhibit nerve endings, resulting in a numb sensation. The lips may also appear pale or experience mild pain. It is recommended to stay warm, use lip balm to protect the lips, and avoid prolonged exposure to cold environments.
2. Psychological Factors
Excessive emotional stress or prolonged states of tension or fear may lead to dysfunction of the nervous system, including disrupted nerve conduction, thereby causing lip numbness. This may be accompanied by mental symptoms such as anxiety, depression, or insomnia. It is recommended to undergo psychological counseling and relaxation training, such as deep breathing, meditation, and yoga, to relieve stress.
3. Vitamin B12 Deficiency
Vitamin B12 is an essential nutrient for maintaining nervous system health, participating in the synthesis and repair of nerve myelin sheaths. Deficiency can impair nerve conduction, causing numbness, possibly accompanied by fatigue, memory decline, and loss of appetite. It is recommended to take medications such as adenosylcobamide tablets, mecobalamin tablets, or vitamin B12 tablets under a doctor's guidance.
4. Facial Nerve Paralysis
Facial nerve paralysis is caused by facial nerve inflammation due to viral infection. Damage to the facial nerve may lead to facial muscle paralysis, manifesting as unilateral paralysis, crooked mouth corners, air leakage while speaking, and other symptoms. Lip numbness may also occur. It is recommended that patients take medications such as prednisone acetate tablets, dexamethasone acetate tablets, mecobalamin tablets, etc., under medical guidance.
5. Diabetes
Diabetes is primarily caused by defects in insulin secretion or impaired biological function, leading to elevated blood glucose levels. Long-term hyperglycemia can damage blood vessels and nerves, especially peripheral nerves, causing sensory abnormalities, manifested as lip numbness, possibly accompanied by symptoms such as thirst, frequent urination, and weight loss. It is recommended to follow medical advice and use medications such as acarbose capsules, glimepiride tablets, gliquidone tablets, etc., to alleviate symptoms.
It is recommended to maintain good oral hygiene daily, rinse the mouth with warm water after meals, brush teeth at least twice daily, reduce oral bacterial growth, and prevent infections that may cause lip numbness.
