Fibromyalgia component - a thought

So… I am loving that my Rheumy is choosing to ignore that the decrease in Remicade is causing me great pain and I can no longer walk. "That is just the FM…"
Now, here is my thought on this. Psoriasis is on the skin, it must be in the tissue. It is genetic and is the whole entire body. Now that being said its obviously not juts localized to specific joints. From all I am reading from everyone we are all having trouble with movement, exhaustion that gets worse with activity. Yes it looks like FM but is it not indeed the PsA? Does anyone with PsA not have this set of symptoms? I believe it is not a separate and unique additionally to PsA but is in fact a component of PsA. Is this true? How does anyone distribute that to the medical profession?