Condition analysis: Dull taste often leads to numbness of the tip of the tongue. The numbness of the tip of the tongue is mostly related to slow blood flow, increased blood viscosity, microcirculation changes, local blood supply deficiency or cerebral blood supply deficiency. You can check whether blood lipids, blood sugar, blood pressure and blood viscosity increase. Numbness of the tip of the tongue may also be a sign of ischemic cerebrovascular disease. If ischemic cerebrovascular disease occurs, in addition to numbness of the tip of the tongue, there will be tongue pain, local swelling of the tongue, poor mobility, accompanied by systemic symptoms and numbness of limbs, language disorder, weakness of limbs, elevated blood pressure, dizziness, headache and so on. In addition, the use of certain drugs such as gentamicin and streptomycin can also cause numbness of the tip of the tongue and lips. Therefore, if there are blood lipids, blood sugar, or blood pressure and blood viscosity increase, we must actively treat them. Guidance: Pay attention to drink plenty of water at ordinary times, take low-dose aspirin, Danshen, Vinorelbuterol and Ginkgo biloba under the guidance of a doctor, and pay attention to vitamin B 1, B6, C, etc. It can reduce blood viscosity, improve microcirculation and eliminate numbness. In addition, be careful not to use drugs such as streptomycin and gentamicin, which will cause numbness of the tongue and lips. So you'd better go to the hospital for a check-up!