Has anyone been diagnosed with Central Pain Amplification?

I’m diagnosed with Central Pain Amplification. First symptom was flare ups in hands/arms. Then a stiff knee joint. Then pain throughout the body and muscle/tissue atrophy. The flare ups are when I am having pain. I get all hot. I believe there is more than a neurological disorder going on? Doctors have been no help. They don’t believe me about wasting away even though I show them and tell them how weak I am. I need more testing. Nerve conduction tests over 2-3 years ago. Anyone else experience flareups?