Repetitive hand or wrist movements can make the condition worse.

The main symptoms are pain and tenderness in the wrist, often below the base of the thumb.

Treatment may include medication, physical therapy, or in rare cases surgery. Treatment is generally successful when begun early.

A painful condition affecting the tendons on the thumb side of the wrist

  • radial styloid tenosynovitis
  • cell-phone thumb

Consult a doctor for medical advice

Sources:  Mayo Clinic and others.


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Cases per year

More than 200,000 US cases per year

Treatable by a medical professional

Requires a medical diagnosis

Lab tests or imaging not required

More common in females

Medium-term: resolves within months

Common for ages 35-50

Diagnosis involves physical examination and a simple test.

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