I have had this for so long..... It use to be called a weak wrist... that is how long I have had it. The first time the doctor used the words "carpal tunnel syndrone" with me I told him he was crazy... I am a COOK, not a secretary!! (Didn't even have a computer then either!) Was that only about 10 years ago????? Anyhow, it flares up on me from time to time, usually when I am at work and have twisted a jar lid wrong or lifted to many cast iron skillets at one time... I wear my brace to bed for a few nights when it is acting up and it clears right up.....usually!!