De Quervain’s tenosynovitis is an inflammatory condition affecting two tendons that control thumb movement – the abductor pollicis longus and extensor pollicis brevis. These tendons run through a narrow tunnel (tendon sheath) at the wrist’s thumb side. When inflammation occurs, the tendons cannot glide smoothly through this tunnel, causing pain and restricted movement. The condition is more common in women, particularly during pregnancy and early motherhood, which is why it is often referred to as “mummy’s wrist.”
- Pain at the base of the thumb when moving it
- Mild swelling over the thumb side of the wrist
- Discomfort when making a fist
- Tenderness when pressing the affected area
- Slight difficulty with pinching movements