If you have noticed an unusual ache in your lower thumb after a long day at the keyboard or intense doubles on the tennis court — you’re not alone. It’s known as texting thumb, blackberry thumb or gamer’s thumb, but it’s not restricted to overzealous video game players.
The proper name for it is De Quervain’s Tenosynovitis. It’s that inflamed irritation within your wrist and lower thumb that occurs as tendons grind against themselves and swell to the point of pain in your hand that can sometimes extend to the lower arm.