The symptoms of numbness of the tongue may be related to neuritis, or local inflammation or eating too spicy food, etc. You can drink warm water and try to eat a light diet. You can drink warm water, try to eat a light diet, if there is localized ulceration, redness and swelling, you can use anti-inflammatory, pain relief ointment or apply vitamin B2. neuritis caused by numbness symptoms, you can take vitamin B1, vitamin B12 and other drugs. Symptoms of numbness of the tongue may also be related to slow blood flow, elevated blood viscosity, changes in microcirculation, and insufficient blood supply to the brain. You can do blood lipids, blood sugar, blood pressure, blood viscosity, carotid ultrasound and other tests, if the cerebral blood supply is insufficient, cerebral infarction or elevated blood viscosity. You can take ginkgo biloba and other vasodilator drugs, aspirin enteric-coated tablets and other anti-platelet aggregation drugs and statin drugs to stabilize plaque.