Re: Can Costo be everywhere on chest?
When I first got it, I had pain across both sides of my chest and into my shoulders, although the pain always favoured the left side. As the years have gone on, my costo has become very localised, but in trying to protect that area I get tense muscles and therefore pain in all through my left shoulder, arm and down my whole back.
I also had shortness of breath when it first started, and still do occasionally. This was primarily due to my body trying to minimise the pain - short and shallow breaths don't move the chest as much as deep breaths, therefore minimising movement in the painful area.
Interestingly too, I also thought I had heartburn when it started. In hindsight though, I had a particularly bad flu just before which may have caused both the acid reflux and the costo.