Recently I have been noticing that I my hand, mainly my thumb, has been shaking very slightly both when I am holding an object such as my phone, or nothing at all. This mainly has been happening in my left hand which is my dominant hand. If I were to hold my tooth brush between my index finger and my thumb I notice that it shakes.
I also have been having some shoulder pain as well, which has been mainly in my left shoulder. The pain is there when I lift up my arm and hold something up. In May 2016, I have been diagnosed with carpal tunnel syndrome as well.
When my hand has thumb shake it is when I am extending it out or am holding something. It is not noticeable unless you are focusing on it. Also when my hand shakes i can feel it slightly in my shoulder as well. Is this something to be worried about? I am 24 years old and male.