Tingling of the right thumb alert to four diseases is not true. Right thumb numbness may be caused by physiological factors, but also need to be alert to carpal tunnel syndrome, cervical spondylosis and other diseases, as well as hypertension, multiple peripheral nerves and other diseases. 1. Physiological factors: patients may be due to long-term use of the hand at work or sleep pressure on the right hand, arm, will lead to patients with symptoms of numbness of the right thumb. 2. Carpal Tunnel Syndrome: Carpal Tunnel Syndrome is mainly caused by the patient’s occupational factors, exogenous compression, and the occupancy of the canal cavity. Patients mainly manifested as numbness or pain in the thumb, index finger, middle finger and other fingers, muscle weakness, etc., which can lead to the symptoms of numbness of the right thumb. 3. Cervical spondylosis: cervical spondylosis is mainly caused by long-term cervical spine strain, sympathetic nerve stimulation. The main symptoms of patients are numbness of the upper limbs, loss of grip strength, dizziness, etc., which can lead to numbness of the right thumb. 4. Other: hypertension, multiple peripheral neuritis and other diseases may also lead to numbness of the right thumb. The symptoms of numbness of the right thumb may be caused by physiological factors, generally do not need treatment, pay more attention to rest, change position can relieve the symptoms. If it is caused by disease, patients should consult a doctor in time.