ECS	Endocannabinoid system
eCB	Endocannabinoid
AEA	Anandamide, i.e., N-arachidonoylethanolamine
2-AG	2-arachidonoylglycerol
PEA	N-palmitoylethanolamine
OEA	N-oleoylethanolamine
AA	Arachidonic acid
OFP	Orofacial pain
VPS	Verbal pain scale
HIS	International Headache Society
TMD	Temporomandibular disorders (i.e., myofascial or joint pain)
DC/TMD	Diagnostic Criteria for Temporomandibular Disorders
NVOP	Neurovascular orofacial pain (orofacial migraine),
TTH	Tension-type headache
PTN	Post-traumatic neuropathy
TN	Trigeminal neuralgia
PHN	Post-herpetic neuralgia
PIFP	Persistent idiopathic facial pain
BMS	Burning mouth syndrome
HRQoL	Health-related quality of life
BMI	Body mass index