343: To me and I'm not a Doctor

, it sounds like you could be in the early stages. Considering your job, it's most likely posture related with poor ergonomics.
Feeling as if you had a sunburn is one of the symptoms I remembered in the beginning as it progressed. I kept looking in the mirror to see if I was red.
Most people recover, are not bedridden, do not live a life on pain killer, etc. Since this came on rapidly (I can relate), I would get to an excellent PT ASAP. I would also have your work station analyzed by a professional in ergonomics.
I did not get to a PT soon and when I did it was made worse. This is a story all to often shared. What part of CA do you live?