Why might I experience pain in the wrist joint on the thumb side?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Wrist pain on the thumb side is often caused by conditions such as De Quervain's tenosynovitis (inflammation of the tendons at the base of the thumb) or scaphoid-trapezium (STT) joint problems, which involve the small joints where the wrist meets the thumb. Other possible causes include arthritis, ligament injuries, or repetitive strain.

Because these conditions can look and feel similar but require very different treatments, identifying the right cause early is key to avoiding long-term damage and getting effective relief. The fastest, easiest way to start narrowing things down is to take a free, instant, online symptom check — it's private, takes just a few minutes, and helps you understand what may be causing your pain and what steps to take next.

Reviewed for medical accuracy: 07/20/2026

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Explanation

Pain in the wrist joint on the thumb side can be caused by several conditions. One possible reason is issues with the scaphoid-trapezium joint, which can be managed through specific procedures, as discussed in the reference by Pegoli and Pozzi. Another potential cause is De Quervain's tendinitis, which can occur after certain surgeries, such as a trapeziectomy, as described by Bugis and colleagues.

Additionally, damage to the extensor pollicis brevis tendon, which helps move the thumb, can also lead to pain, as explained by Karthik and team. Understanding these conditions can help in identifying the cause of the pain and seeking appropriate treatment. If you're experiencing persistent wrist pain and want to explore what might be causing it, try our free AI symptom checker to get personalized insights, then consult with a healthcare professional for a proper diagnosis and management plan.

(References)

Pegoli L, & Pozzi A. (2017). Arthroscopic Management of Scaphoid-Trapezium .... Hand clinics, 28991591.
Bugis AA, Daadour M, Hakki RI, Khan HA, & Alzahrani AS. (2024). De Quervain's Tendinitis Following Trapeziectomy for the .... Cureus, 39323545.
Karthik K, Carter-Esdale CW, Vijayanathan S, & Kochhar T. (2013). Extensor Pollicis Brevis tendon damage presenting as de .... BMC sports science, medicine & rehabilitation, 23731737.

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