Effects

• Tendonitis occurs when irritation causes the lining around the tendon to swell. This results in pain and tenderness, and makes it difficult for the tendons to move normally.
  
  

Treatment Considerations

• A doctor decides on tendonitis treatment based on several factors, as explained by the University of Virginia Health System. He considers your age, medical history, overall health, tolerance for medications and severity of the tendonitis.
  
  

Rest

• Your symptoms may resolve if you avoid activities that cause pain and swelling. Your physician may recommend resting your thumb and wrist by wearing a splint.
  
  

Physical Therapy

• A physical therapy program can be beneficial for thumb tendonitis. This involves exercises that stretch and strengthen the tendons of the wrist and thumb.
  
  

Medication

• You also can take oral anti-inflammatory medication, and the doctor may administer corticosteroid injections into the tendon lining to reduce swelling and relieve pain. Repeated injections are usually not advised, as noted by the Mayo Clinic, as they can weaken the tendon and lead to tendon rupture.
  
  

Surgery

• If your thumb tendonitis symptoms are severe and do not improve, your physician may recommend surgery.