ACH	Acetylcholine
BONT	Botulinum toxin
BONT-A	Botulinum toxin serotype A
BONT-B	Botulinum toxin serotype B
CGRP	Calcitonin gene-related peptide
CM	Chronic migraine
CNS	Central nervous system
DA	Dalton
E2	Estradiol
EM	Episodic migraine
FDA	Food and Drug Administration
FHM	Familial hemiplegic migraine
FSH	Follicular-stimulant hormone
HC	Heavy chain
IL	Interleukin
LC	Light chain
MA	Migraine with aura
MIDAS	Migraine Disability Assessment
MO	Migraine without aura
MU	Mouse Units
NO	Nitric Oxide
NOS	Nitric oxide synthase
NSAID	Non-steroidal anti-inflammatory drug
PREEMPT	Phase III Research Evaluating Migraine Prophylaxis Therapy
QOL	Quality of Life
SNAP-25	Synaptosomal-associated protein-25 kDa
SNARE	Soluble NSF attachment protein receptor
SP	Substance P
TNF- A	Tumor necrosis factor alpha
TRP	Transient receptor potential channel
TRPA1	Transient receptor potential ankyrin 1
TRVP1	Transient receptor potential cation channel subfamily V member 1
VAMP	Vesicle-associated membrane protein
WHO	World Health Organization