Is fibromyalgia real? What is fibromyalgia?

Is fibromyalgia just depression? Is it a mental health condition? is it all in your head?

Or is fibromyalgia a connective tissue disorder, making collagen and joints weak and painful? Is it safe to exercise with fibromyalgia?

Or perhaps it's neither of these things... Maybe fibromyalgia is a multifactorial condition that deserves respect and understanding.