I struggled with carpal tunnel for about 15 years to the point where I was going anywhere from acupuncture to chiropractor to actually getting a shot or two of cortisone to dipping my hand in a bucket of ice water during a show to buying a can of air. You turn it upside down and spray it on your wrist to get the frozen aspect of it and hopefully it wakes your hand up so I could get the feeling back in my hand.