I get severe numbing and pain in my left hand, if I've used it a lot the previous day, i.e., playing guitar or any activity that repetitively stretches my fingers apart a lot.
The sensation is similar to when your arm or any other extremity "falls asleep", followed by the "thousands of stinging pin pricks sticking into you". Only, with my situation, there is numbness and the stinging, and both are accompanied by SEVERE pain!
It started as an anomaly that would happen the day after strenuous use of that hand. However, recently it's becoming a daily event. I'm also losing a great deal of sleep as well, because it wakes me up in the middle of the night almost every night.
Please, let me know if anyone else has experienced these symptoms! I need a diagnosis and treatment, if possible. I'm thinking it could be carpel tunnel syndrome, but this thing hurts SO BADLY at times, that it makes me wonder if it's something else...