AnaphylaxisPassive Cutaneous AnaphylaxisEmergenciesEmergency Service, HospitalEmergency MedicineEmergency Medical ServicesEmergency TreatmentFood HypersensitivityImmunoglobulin EIdiopathic Pulmonary FibrosisEmergency NursingDrug HypersensitivityInsect Bites and StingsSRS-AWheat HypersensitivityPeanut HypersensitivityMast CellsUrticariaHistamine ReleaseSkin TestsScoliosisArthritis, JuvenileEmergency Services, PsychiatricAllergensHistaminePurpura, Thrombocytopenic, IdiopathicBasophilsAnti-Allergic AgentsEmergency Medical TechniciansEpinephrineBronchial SpasmCell DegranulationAnt VenomsHistamine H1 AntagonistsDesensitization, ImmunologicRetrospective StudiesEmergency Medical Service Communication SystemsCromolyn SodiumHypersensitivityGlafenineLatex HypersensitivityAngioedemaTriageAutacoidsHistamine AntagonistsIdiopathic Interstitial PneumoniasPulmonary FibrosisHypersensitivity, ImmediateContraceptives, PostcoitalArachis hypogaeaContraception, PostcoitalOvalbuminLens PlantBee VenomsTreatment OutcomeProspective StudiesAdrenergic AgonistsTime FactorsAmbulancesCardiomyopathy, DilatedT-Lymphocytopenia, Idiopathic CD4-PositiveNeuromuscular Blocking AgentsAntigens, PlantIntradermal TestsAscarisGuinea PigsReceptors, IgEArthropod VenomsImmunoglobulin GTryptasesNut HypersensitivityDisaster PlanningReaginsWounds and InjuriesDiethylcarbamazineSeverity of Illness IndexPlatelet Activating FactorLungAntigensBasophil Degranulation TestHymenopterap-Methoxy-N-methylphenethylamineFirst AidPatient AdmissionEvidence-Based Emergency MedicineMastocytosisFagopyrumHyperostosis, Diffuse Idiopathic SkeletalMethysergideEmergency Responders