Dyspnea resulting from fibromyalgia.

Two patients with chronic, severe, episodic dyspnea underwent prolonged, extensive, and invasive evaluations without a diagnosis being made. Both were subsequently diagnosed with fibromyalgia, and therapy directed at this condition resulted in resolution of their symptoms. Fibromyalgia is rarely included in the differential diagnosis of dyspnea, and timely diagnosis and treatment may be delayed. However, this condition must be considered because it can only be established by seeking the appropriate history and physical findings.