Overview:
Texting thumb, medically known as De Quervain’s tenosynovitis, is a painful condition affecting the tendons on the thumb side of the wrist. It often develops from repetitive thumb motions such as scrolling, texting, or gaming, leading to tendon inflammation and difficulty with hand movement.

Causes:

• Frequent texting or smartphone use
• Repetitive thumb and wrist movements
• Overuse from gaming or typing
• Lifting or gripping with poor wrist posture
• New parenthood (“mommy thumb”) from repetitive lifting of infants
• Inflammatory conditions like rheumatoid arthritis

Symptoms:

• Pain and tenderness at the base of the thumb or wrist
• Swelling around the wrist or thumb side
• Difficulty gripping or pinching objects
• Pain that worsens with thumb movement or wrist rotation
• A “sticking” or “catching” sensation in the thumb

Diagnosis:

• Physical examination: Finkelstein’s test (pain on bending the wrist with the thumb tucked in) is commonly used
• Medical history review: Focuses on repetitive thumb activities
• Imaging (like ultrasound or MRI) is rarely needed unless ruling out other conditions

Treatment and Management:

• Rest and activity modification: Avoiding or limiting repetitive thumb motions
• Thumb splinting (thumb spica brace): To immobilize and reduce strain
• Ice application: Helps reduce inflammation and swelling
• NSAIDs: For pain and inflammation relief
• Physical or occupational therapy: To improve tendon mobility and prevent recurrence
• Corticosteroid injections: Effective for reducing tendon sheath inflammation
• Surgery: In severe or chronic cases, a surgical release of the tendon sheath may be necessary

Prognosis:
Most individuals recover well with non-surgical treatment if diagnosed early. Persistent or untreated cases may lead to chronic pain and reduced thumb function.