Young people with numb lips are usually caused by dietary factors, allergies and other reasons, patients can seek medical attention in time to use drugs to treat. 1. Dietary factors: for example, eat spicy stimulating food, due to local stimulation, will lead to the symptoms of numbness of the lips, usually do not need medication, drink more warm water, usually quickly relieve the symptoms. 2. Allergy: If contact with allergens or eat allergic food, it will lead to patients with numbness of the lips, itching, fever and other allergic symptoms. Patients can take levocetirizine hydrochloride tablets, loratadine tablets, cyproheptadine hydrochloride tablets and other drugs under the guidance of the doctor, whose main function is to reduce the activity of histamine receptors in the nerve and capillary cells and inhibit vasodilatation, so as to relieve the symptoms. The above are only some of the common causes. It is recommended to consult a doctor in time for relevant examinations and standardized treatment after a clear diagnosis. The use of drugs must follow the doctor’s instructions, not blindly use their own drugs, so as not to cause adverse consequences.