Facial PainPain MeasurementPainFacial NeuralgiaTrigeminal NeuralgiaFacial ParalysisTemporomandibular Joint DisordersDothiepinTrigeminal Nerve InjuriesTemporomandibular Joint Dysfunction SyndromeTrigeminal NerveFacial NerveFacial ExpressionChronic PainRhizotomySphenopalatine Ganglion BlockPterygopalatine FossaFacial MusclesDibenzothiepinsVascular HeadachesCentral Nervous System SensitizationTrigeminal Caudal NucleusOsteomaPain ManagementFacial Nerve DiseasesFacial BonesSinusitisFacial InjuriesHeadacheNeuralgiaFacePain ThresholdPain, PostoperativeLow Back PainBack PainFacial AsymmetryDecompression, SurgicalFacial DermatosesNeck PainAbdominal PainPain, IntractableChronic DiseaseFacial NeoplasmsPelvic PainPain PerceptionAnalysis of VarianceAcute PainMagnetic Resonance ImagingPain, ReferredTreatment OutcomeReproducibility of Results