Chronic daily headache in the absence of medication overuse: is daily or continuous pain more treatment-resistant than chronic daily headache with pain-free days?
Lake
Alvin E
AE
Michigan Head-Pain and Neurological Institute, 3120 Professional Drive, Ann Arbor, MI 48104, USA. aelake3rd@mhni.com
D002908:Chronic Disease; D002940:Circadian Rhythm; D004351:Drug Resistance; D006261:Headache / Q000188:drug therapy* / Q000503:physiopathology*; D006801:Humans