Common causes of thumb pain include strain, trauma, tenosynovitis, gout, osteoarthritis, etc., which require timely consultation to identify the cause. 1. Strain: prolonged use of the thumb for activities, such as playing cell phones, computers, writing, etc., the joints are stimulated or pulled will cause pain, through rest and self-conditioning can be improved. 2. Trauma: When the root of the thumb is traumatized, it may cause swelling and pain, and in serious cases, it may lead to fracture and dislocation, resulting in limited movement. 3. Tenosynovitis: If the thumb is stimulated and pulled for a long time, it will lead to edema, oozing and adhesion of the flexor tendon, and the tendon sheath will be triggered by the jamming at the root of the thumb, and some of them may have popping sound. 4. Gout: due to heavy drinking, eating seafood, etc., the body’s purine metabolism is abnormal, resulting in uric acid deposition in the thumb at the root of the palm, leading to non-specific inflammation, which triggers pain. 5. Osteoarthritis: the thumb is the most frequent among the fingers, excessive activity may lead to the wear and tear of articular cartilage, resulting in compensatory hyperplasia degeneration around the joints, triggering osteoarthropathy. When the thumb at the root of the palm of the hand after the pain, if through rest, hot compresses, etc., can not be improved and alleviated, you should consult a doctor in a timely manner, to identify the cause of the disease, in accordance with the doctor’s instructions standardized treatment.