id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-010398-5wot7tix	Clauw, Daniel J.	Perspectives on Fatigue from the Study of Chronic Fatigue Syndrome and Related Conditions	2010-05-31		.txt	text/plain	10753	454	40	Also, these terms are consistent with the views held by practitioners who treat these patients and researchers who study them that CFS/ICF is a very heterogeneous disorder that, like many other chronic medical illnesses (eg, hypertension, diabetes), has a multiplicity of etiologic and pathogenic factors that contribute to the expression of the syndrome [12, 13] . There is now unanimity that at least a large subset of patients with CFS have a condition that is much broader than just CFS and has been labeled variously, including "functional somatic syndromes," "medically unexplained symptoms," "chronic multisymptom illnesses," "somatoform disorders," and perhaps most appropriately, "central sensitivity syndromes." Yunus [32] first showed FM to be associated with tension-type headache, migraine, and IBS; this author designed a Venn diagram in 1984 that emphasized the epidemiological and clinical overlaps between these syndromes and primary dysmenorrhea.	./cache/cord-010398-5wot7tix.txt	./txt/cord-010398-5wot7tix.txt