I've talked about my issues a little bit in the poll/thread about warming up. In my early adulthood I used to work in a cold storage warehouse tossing around cases of frozen meat for a handful of years before doing the same thing for a hardwood flooring company. An 80lb case would be my lightest box at that point. As I would lift a case I would feel what I could only describe as guitar strings being plucked in my forearms: a distinct ASDR feeling followed by numbness/tingling in my hands and fingers.
This kind of sensation continued into my next job of loading, unloading, and the delivering school lunches in rolling ovens that I would have to push and pull around different campuses. It was at this point where I'd wake up after a day of work and have swollen forearms like Popeye the Sailor, almost unable to clench my fist without pain. The regional manager got me in to see the company's doctors, a few different crackpots and they each said something different; tendinitis, ulnar fasciitis, tennis elbow, were some of the few that I clearly remember. I wore wrist braces on both wrists day and night. After a while I just got numb to all of their guesses and BS. Physical therapy out at my company's location was really good and they taught me some cool stretches that I still use. I was put on light duty but it was office work and it only made things worse.
I was out on disability and sunk into a deep depression, unable to play guitar like I could just 2 years ago and had quit all my other hobbies as to save my hands to play a little bit of guitar. The good physical therapy and medical treatment in my company's area was replaced by the shitty sub-par excuse for medical care in my area. I would self-medicate and fall into self-destructive habits. I decided to go to school with the time and money that I had but quit going halfway through (still passing the classes I took) because I couldn't keep it together. I felt ashamed, guilty, and was at a real low point.
I sucked it up and decided to go back to work, thinking that would give me purpose again but it wasn't long before the pain came back so bad that I failed to deliver on time and refused to help a school volunteer, which ended up in me losing my job. The muscles in my forearms would cramp up and retract to the point where I wasn't able to straighten my wrists.
My work now is less physically strenuous, I exercise and eat close to a vegan diet. I feel stronger now at 37 than I did when I was 25 and haven't had any major forearm issues in about 9 years. My hand dexterity has suffered because of all of this and I've lost some feeling in my hands but I'd rather have these issues than pain and be unable to play guitar.