Email updates   Open Access Highly Accessed Research article
Migraine headaches in Chronic Fatigue Syndrome (CFS): Comparison
of two prospective cross-sectional studies  Murugan K Ravindran,
Yin Zheng, Christian Timbol, Samantha J Merck and James N
Baraniuk*  Author Affiliations  Division of Rheumatology,
Immunology and Allergy, Room 3004F, 3rd Floor PHC Building,
Georgetown University, 3800 Reservoir Road, NW, Washington, DC
20007-2197 USA  For all author emails, please log on.  BMC
Neurology 2011, 11:30  doi:10.1186/1471-2377-11-30  Published: 5
March 2011    Headaches are more frequent in Chronic Fatigue
Syndrome (CFS) than healthy control (HC) subjects. The 2004
International Headache Society (IHS) criteria were used to
define CFS headache phenotypes.   Subjects in Cohort 1 (HC =
368; CFS = 203) completed questionnaires about many diverse
symptoms by giving nominal (yes/no) answers. Cohort 2 (HC = 21;
CFS = 67) had more focused evaluations. They scored symptom
severities on 0 to 4 anchored ordinal scales