Fibromyalgia involves chronic pain, has an unknown cause, and is diagnosed by the presence of pain points on the body.
Fibromyalgia is a condition characterized by chronic pain in muscles and soft tissues surrounding joints, unknown cause, and diagnosis that includes identifying pain points on the body. These aspects make statements OA, OB, and OC all true regarding fibromyalgia.
https://brainly.com/question/36954450