The causes of numbness of the tongue and lips include physiological factors, intracranial diseases, allergies and so on.
1. Physiological factors: when eating spicy and stimulating food, the tongue and lips will feel numb due to stimulation. After a period of time, the symptoms will gradually decrease until they disappear.
2. Intracranial diseases: including cerebrovascular disease, intracranial tumors and so on. Cerebrovascular disease leads to ischemia and hypoxic necrosis of brain cells, resulting in numbness of tongue and lips. Intracranial tumor can cause brain cell damage leading to numbness of tongue and lips, which can be diagnosed by combining with head CT or MRI examination.
3. Allergy: Allergy to food or drugs can lead to numbness of the tongue and lips, often accompanied by body itching and other symptoms.
Numbness of the tongue and lips may also be caused by other factors, if the symptoms are not relieved for a long time, it is recommended to consult a doctor in a timely manner in order to avoid adverse consequences.