此Cochrane回顧摘要了我們所知道有關注射皮質類固醇對de Quervain腱鞘炎治療的效果。這項審查表明，在de Quervain腱鞘炎患者，我們不能確定是否注射皮質類固醇可以減少疼痛，是因為只有非常低品質的證據。什麼是de Quervain腱鞘炎和皮質類固醇注射是什麼？de Quervain腱鞘炎發生在你的拇指和手腕發炎時，會疼痛和困難移動。肌腱是你的身體的一部分，連接你的肌肉到骨骼。de Quervain腱鞘炎患者在拇指基部疼痛，壓痛，腫脹，尤其是當他們的手腕從撓側移動至尺側或從尺側移動至撓側。皮質類固醇注射是用針注射到關節(如您的手腕)或肌腱。皮質類固醇可能透過降低您的手腕或拇指發炎來發揮作用。該注射本身也可能有助於減輕肌腱壓力
BlackBerry thumb is a neologism that refers to a form of repetitive strain injury (RSI) caused by the frequent use of the thumbs to press buttons on PDAs , smartphones , or other mobile devices . The name of the condition comes from the BlackBerry , a brand of smartphone that debuted in 1999,  although there are numerous other similar eponymous conditions that exist such as " Wiiitis ",  " Nintendinitis ",  "Playstation thumb", "texting thumb",  "cellphone thumb",  "smartphone thumb", "Android thumb", and "iPhone thumb". The medical name for the condition is De Quervain syndrome and is associated with the tendons connected to the thumb through the wrist. Causes for the condition extend beyond smartphones and gaming consoles to include activities like golf, racket sports, and lifting.