Ankylosing Spondylitis, Fibromyalgia and Chronic Fatigue Syndrome. Introduction, aetiology, pathophysiology, epidemiology, clinical features, psychological approaches. 05 May, 2019 Posted on May 26, 2019 - 2:02 am by drsharan-admin Presented during Course on New Concepts in the Management of Complex Pain, RECOUP, Bengaluru, India (May 26, 2019)