I have a version of this on my left side, except it radiates into my chest, ribs and upper back. They’ve diagnosed me with thoracic outlet... sounds like you have a form of what I have (severe muscle spasms/neurological issues). Only things that gives me relief are: Aleve, turmeric/curcumin, muscle rubs, hot baths, foam rolling my back and lat, meditation, and I found this incredible neck pump that stops all my neck spasms (they’re so strong I get dizzy and I get a choking feeling in my neck). Remember that you have to MANAGE your symptoms one way or another, file for unemployment if you can and get some money to help you manage. Don’t give up, I’m 26 and been dealing with this for 3 years now, pending removal of my first rib... I’ve still managed to get a masters and have a six figure job, hang on bud 🙏🏼
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