Fibromyalgia is defined as which of the following?

Fibromyalgia is best defined as a painful non-articular rheumatic condition, which means it causes widespread pain throughout the body without involving the joints. This condition is characterized by heightened pain sensitivity and can include symptoms such as fatigue, sleep disturbances, and cognitive issues often referred to as "fibro fog."

Understanding fibromyalgia as a non-articular condition highlights that the pain is not associated with inflammation or damage to joints or muscles directly, which distinguishes it from conditions like arthritis or muscle strains. While chronic fatigue syndrome and joint inflammation may share symptoms with fibromyalgia, their underlying causes and the nature of the pain experienced differ significantly from the defining characteristics of fibromyalgia itself.