First of all... I've been reading everyone's backrounds and injury histories and my heart goes out to you

I have suspicions and assumptions and a whole lot of symptoms that no one down under in Australia is willing or brave enough to diagnose.
In March 2010 during stock take (annual inventory) at my old job I pulled a box down onto my shoulder as it shifted nicely enough to make me assume I could carry it. I brought it down onto my right shoulder from a higher position and started going backwards down our safety ladder at work. My blood pressure was way up as my face was burning and I couldn't breathe and threw the box down as I got to the final step and just stared at it in shock. How can coloured pencils in little tins be so heavy? Both trapezii were burning co workers are looking at me with surprise, "you ok?" one said. "No" I respond. (This girl forgets she was even there when it came to work cover, in fact the managers didn't remember me even being there... but that's another story.)
So I have this injury and I lose the case to claim. No lawyer would back me as the outcome was too grey.

2010- In and out of 2 hospitals with (you'll have to interpret these symptoms into clinical symptom names because I'm told very little) Parathesia? Burning sensations from head to toe. Right shoulder had minimal function, couldn't lift the kettle to make tea I was so weak. They gave me morphine, anti-inflam, plus some sort of brain altering drug that made me sleepy (Endep). This was taken during the body-burning symptoms I'd get when I took out the laundry or if my head wasn't on my pillow right. Scary days and nights. I felt like a cracked egg. Pain came in waves, dozed off between waves.
2011-2013 - 2 MRIs were done and when I asked what my results were "Nothing is wrong with you." Wait... what? I can't feel my face and there is nothing wrong with me? The young men who weren't even the specialist but his understudies said " You are young (40) and we would have to cut open your throat and it would leave an ugly scar." If they can't tell me what it is then they need to refer me to someone who can! But no. They gave me more scripts to get more of the same drugs and asked me not to send in a complaint as they had enough already..... Luckily their senior specialist quit and walked straight out of doing a surgery. Good thing I didn't have him touch me.
Today I've got different symptoms. I found a new physio and doctor, I've given up on all the specialists.

Raynauds Phenomenon -My NEW GP gave me a script for Adefin 10 (half a pill in morning half at night and I've not seen Raynauds symptoms since I started taking it 2 weeks ago and my fingers have a normal rosey color again) It's a blood pressure medicine that allows capillaries to relax a bit.

TOS (semidiagnosed)- my right shoulder cuff? is ceased up and physio is working on neck strengthening so I stop shrugging up- I feel the flexion in my left pectoral but can't feel much on the right. My pulse drops when I look to the left or right. Physio diagnosed this, no doctor has bothered or knows how to check for it.
Random spasms in R triceps and something weird going on under scapula near ribs all muscle/nerve. Pain in the evenings when lounging, have to sit "anatomically" straight or I suffer.
I think all these are due to the lack of strength in my upper torso. I have a huge hard knot that has not moved since March 2010 that is pulling vertebrae C5/C6 out of alignment causing stenosis on the R side. I have degeneration there and osteophytes encroaching on the neural foramina at C4/C5 and C5/C6. Osteophytes probably have nothing to do with my injury, but if I did get a whiplash-like injury from this incident the rubbing of the joint can cause these to form. C5/C6 is common for whiplash, mine would have been a sideways version of this with the box heavily mashing down on the side of my neck.

With some of the posts I've read where someone has multiple issues all over the body I'd request your doctor to send you for a blood test checking your auto-immunity. One of those tests that get overlooked. Keep safe and keep looking for answers, get pushy.