My Brother Has Had M>G> For Several Years And Was

My brother has had M>G> for several years and was told by his neurologist that it appeared to be limited to his eyes (blurred vision ,drooping lid etc.) Presently he is having very sevear pain in the upper chest area. his Primary Dr. said it is acute muscle spasms and told him to put ice on it. He has similar pain near the rib cage in his lower chest. Could this be related to the M.G.? If not what should he do. He also has COPD and has a Cardo Dr. but no answers?