What should I do if I can't move my thumb due to de Quervain's tenosynovitis?

When thumb tenosynovitis causes immobility, the following measures can be taken to alleviate and treat the condition: 1. Rest and immobilization: Stop using the thumb for activities to avoid further aggravating inflammation and pain. 2. Physical therapy: Under a doctor's guidance, apply heat compresses or undergo physical therapy to help improve blood circulation and reduce inflammation. 3. Medication: Follow the doctor's instructions to use non-steroidal anti-inflammatory drugs (such as celecoxib capsules, loxoprofen sodium tablets) for anti-inflammatory and pain-relieving treatment. 4. Local steroid injection: If the tenosynovitis is severe, a local injection of medication may be administered under the doctor's guidance to reduce inflammation and relieve pain. 5. Surgical treatment: When the above treatments are ineffective, surgical options such as tendon sheath incision may be considered to restore normal thumb mobility. These measures should be carried out under the guidance of a doctor. Do not attempt self-treatment.