My left hand - constant for about a year and a half now. You could literally set a clock by it - in/out/in/out every 5 seconds. Thought it could be a parmaris spasm but I get it on the other hand, same place - every couple of days.Right shoulder blade - constant 9 month, back of knee the same.Right thigh 3 months - started a year and a half ago for a couple of months then stopped, but came back with lots of cramp like pain.Both feet (mainly arches) - constant for a year and a half, but always seem better (not as intense) when I wake up.All the above go several times a minute - along with the usual random pops / shakes vibrations etc.