system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: what is fibromyalgia? it seems like a catch-all for chronic pain.

firstly i do not want to discount people with chronic pain. i cant imagine how difficult that must be to deal with. i am a science minded person, and i haven’t found any root cause for fibro, or general chronic pain. what’s the scientific consensus on this? how does it happen? is it a diagnosis from doctors who just don’t know what else to test for? just curious is all. thanks for your time.
gpt
Fibromyalgia is more a description of a set of symptoms than a specific disease in itself. This doesn't make the symptoms less real, it just means we have a better knowledge that those symptoms cluster than about what causes it. Think about it more like depression or adhd than diabetes - they're real disorders, and have underling biological and social causes, but we still group and describe by symptoms rather than by a blood test result or scan etc.