Chronic Fatigue Syndrome: Classification

The U.S. Institute of Medicine (IOM) has revised the diagnostic criteria for chronic fatigue syndrome (CFS). Patients with systemic exertion intolerance disorder (SEID) must have the following three symptoms: As measured by pre-disease levels, the ability to perform occupational, educational, social, and personal tasks is substantially diminished or impaired. This condition has persisted for more … Chronic Fatigue Syndrome: Classification