I had this exact thing on my left hand last week with my eye issues. I describe it as feeling like my hand is one of those toys that look like a balloon but are filled with water. You squish them and they move forward. My hands look the same, however. I also have numbness and it feels really weird to open and close that hand.
I'm undiagnosed. So I don't know how helpful this is.
I have also had ALOT of right side neck and shoulder pain, as well as a new onset bilateral pain just below the clavicle on my chest. Not sure how connected this is to my neck. Hurts when I rotate my shoulders back to front. Such wierd pains....it always freaks me out.