Unfortunately the information you were given about costiocondritis caused by fibromyalgia
By definition, fibromyalgia
(FMS) is a syndrome, therefore does
any other conditions itself-in other words it is the sum of symptoms and imbalances, with some of those being necessarily present for its diagnosis.
The cause of costiocondritis could possibly be one of the underlying causes fibromyalgia, which by the way remains unknown according to
conventional medical science.