AAN

American Academy of Neurology

ACP-ASIM

American College of Physicians-American Society of Internal Medicine

AHS

American Headache Society

BASH

British Association for the Study of Headache

CHS

Canadian Headache Society

EFNS

European Federation of Neurological Sciences

FLX

fluoxetine

ICHD

International Classification of Headache Disorders

IHS

International Headache Society

SNRI/s

Serotonin-norepinephrine Reuptake Inhibitor/s

SSRI/s

Selective Serotonin Reuptake Inhibitor/s

TCAs

tricyclic antidepressants

TTH/s

tension-type headache/s