The most common causes of left thumb root pain are tenosynovitis, rheumatoid arthritis, trauma and so on.
1. Tenosynovitis: when the tendon repeatedly slides in the tendon sheath for a long time, excessive friction will damage the tendon sheath and tendon, which will cause adhesion between the two, and it will be easy to appear the root of the left thumb pain.
2. Rheumatoid arthritis: it is an autoimmune disease that mainly involves many joints in the whole body and extra-articular symptoms, which can cause stiffness, swelling, deformity and pain in the finger joints.
3. Trauma: When the root of the left thumb is hit by an external impact, it is easy to cause soft tissue damage and then inflammatory reaction, manifested as local redness, swelling and pain.
Caused by the root of the left thumb pain causes more, but also may be related to gout, bursitis and other reasons, if the discomfort symptoms continue, should promptly go to the hospital to identify the cause of the disease, targeted treatment.