So for the past month, I've been experiencing weird electrical sensations (pins and needles) throughout my body, but no numbness. They've been really inconsistent where they show up, but they're everywhere - legs (usually feet), groin, hands, wrists, arms, shoulders, back and neck, and face. I also get these really stabbing headaches in the back of my head occasionally. I'm also starting to be a little sensitive to light. About two months ago, my shoulders started to feel heavy and sore, so I might've injured them somehow, but they haven't gotten worse. I work a pretty sedentary tech support job so and my posture isn't that great. I've started going to physical therapy for my shoulders and back, but I'm unconvinced that it will do the job. I'm thinking I have a pinched nerve(s) or some disc(s) out, but I don't have any injuries that I'm aware of and I'm not that active. One thing to note is the pain seems to go away most when I lay down, and is more active when standing or sitting for long periods of time. Could it be a disease? I don't know at what point I should make this more of a concern with my doctor since it is hard to describe (the pain is not always in one place). Any suggestions and or a guess as to what it might be?