CapsaicinSensory System AgentsTRPV Cation ChannelsNeurons, AfferentNociceptorsSubstance PReceptors, DrugCalcitonin Gene-Related PeptideCoughIrritantsAntipruriticsCapsicumNerve Fibers, UnmyelinatedDiterpenesNeurokinin AGanglia, SpinalInjections, IntradermalReflexPainNerve FibersHyperalgesiaRuthenium RedMustard PlantRats, Sprague-DawleyTachykininsAntitussive AgentsAfferent PathwaysVagus NervePolyunsaturated AlkamidesNeurogenic InflammationDose-Response Relationship, DrugMentholAdministration, TopicalReceptors, Neurokinin-2Sensory Receptor CellsTachyphylaxisPhysical StimulationTongueBradykininNeurokinin-1 Receptor AntagonistsPain MeasurementAnalgesicsMucunaTrigeminal GanglionHot TemperatureReceptors, TachykininDenervationReceptors, Neurokinin-1Pain ThresholdGuinea PigsVagotomyPruritus AniEndocannabinoidsTrigeminal Caudal NucleusElectric StimulationRats, WistarNodose GanglionIsoindolesTrigeminal NerveRhizotomy