In reply to Fluvial:
I am suffering from something very similar, and it is p*****g me off! I also have a sore spot in my left shoulder blade, that hurts when my wife tries to massage me, and I think they're linked.
Hope someone has any ideas.
I intend waiting until I am completely sick of it, then as it starts to heal, I will pay an extortionate price to see a phyio, who will recommend some exercises and a whole load of repeat visits, which I won't do, and it'll heal with time
But it would be nice if someone had a magic wand.......