BT-A	onabotulinumtoxinA
CGRP	calcitonin gene-related peptide
CM	chronic migraine
CSD	cortical spreading depression
HIT-6	6 items headache impact test
ICHD-3	International Classification of Headache Disorders 3rd edition
mAbs	monoclonal antibodies
MIDAS	Migraine Disability Assessment Questionnaire
MHDs	the mean number of monthly headache days in the last 3 months
MDs	the mean number of days per month in which patient took at least one medication (MDs) in the last 3 months
MO	medication overuse
PREEMPT	Phase 3 REsearch Evaluating Migraine Prophylaxis Therapy
ROC	Receiving Operating Characteristic
SD	standard deviation