Numbness in the thumb, if it is caused after a long time of lifting heavy objects, you can use hot water to soak your hands and do local massage, which will help promote blood circulation and relieve the symptoms. Numbness of the thumb, if the neck feels uncomfortable, stiff, low head activities for a long time numbness is more obvious, may be related to cervical spine disease, you can do more neck activities, can also do traction, acupuncture and other treatments. If you have numbness in your fingers, it may be related to peripheral neuritis, so you can take vitamin B1, methylcobalamin tablets and other drugs. If you have diabetes and have numbness in the thumb, you should take glucose-lowering drugs or insulin injections to control your blood sugar. Numbness may also be related to carpal tunnel syndrome, median nerve injury or cerebrovascular disease, and you should go to the hospital for examination to determine the cause before treatment.