You do not have Carpal Tunnel Syndrome or tendonitis, yet! However, if you keep doing what you are doing, you will get there.I say these things because if you go to a doctor, especially a hand surgeon, they will cut you open and basically ruin your piano career. And, you will absolutely not be the first.Calm down, and don't freak out. Help is on the way, and that will come from your study of the problem and its eventual solution.
Surgeons often like to do what they know. It's usually best to see a general practitioner or specialist and THEN a surgeon. Going straight to a surgeon usually means you know somethings actually wrong, i.e. your shoulder won't stay together or your leg takes a 90 degree turn.
In the meantime, you can visit Dr. Mark's website www.pianomap.com, which goes into an extensive discourse on this subject.
A qualified surgeon want to do the best option for specific patient.you know most doctors who do hand job are surgeon
I followed the link and read that playing with "curled fingers" is a very bad thing to do. Well, when I started playing the piano, 36 years ago, I learnt that position on my very first lesson! Which meant that you had to keep your finger nails very short in order not to make "clac" sounds against the keys ... The reason this is bad is, according to Dr. Mark, that you have to make two contradicitve movements at the same time: bending the finger AND lifting it. (Try doing it while holding your hand right out in the air - you can feel that this is not very comfortable.) So he suggested a position with "naturally" curled fingers instead.
Sitting in a chair, put both hands in your lap, and then slowly swing your right hand out to where it is perpendicular to your torso and parallel to the floor. Just let you hand naturally hang off of the end of your wrist using natural gravity.
And for the record, none of Dr. Mark's students are instructed to play or perform any special exercises to help establish the normal position or strength of the hand and fingers. As he accurately points out in his book, the fingers of the hand are moved by muscles of the inner forearm.I do not recommend that anyone use the special exercises referenced in the prior post.