AnaphylaxisPassive Cutaneous AnaphylaxisEmergenciesEmergency Service, HospitalEmergency MedicineEmergency Medical ServicesEmergency TreatmentFood HypersensitivityImmunoglobulin EEmergency NursingDrug HypersensitivityInsect Bites and StingsSRS-AWheat HypersensitivityPeanut HypersensitivityMast CellsHistamine ReleaseSkin TestsUrticariaEmergency Services, PsychiatricHistamineAllergensBasophilsEmergency Medical TechniciansEpinephrineAnti-Allergic AgentsBronchial SpasmCell DegranulationAnt VenomsDesensitization, ImmunologicHistamine H1 AntagonistsEmergency Medical Service Communication SystemsCromolyn SodiumHypersensitivityGlafenineLatex HypersensitivityTriageAutacoidsHistamine AntagonistsAngioedemaHypersensitivity, ImmediateContraceptives, PostcoitalArachis hypogaeaContraception, PostcoitalOvalbuminLens PlantBee VenomsAdrenergic AgonistsAmbulancesNeuromuscular Blocking AgentsAntigens, PlantIntradermal TestsAscarisRetrospective StudiesGuinea PigsArthropod VenomsTryptasesNut HypersensitivityReceptors, IgEDisaster PlanningReaginsWounds and InjuriesDiethylcarbamazinePlatelet Activating FactorHymenopterap-Methoxy-N-methylphenethylamineFirst AidPatient AdmissionAntigensTime FactorsEvidence-Based Emergency MedicineFagopyrumMethysergideBasophil Degranulation TestEmergency Responders