Arterial nerve damage?

Hi Forum,
I have had reoccurring pain in my right side which feels like it radiates from my armpit down my ribs and to my elbow. The doctors don’t have any ideas but an osteopath has suggested it could be related to arterial nerve damage. I was just wondering if anyone else had something like this? It’s on the side where all my MS symptoms are but nothing I can find on the internet seems to suggest MS pain feels like this.

Any ideas gratefully received!