Hypersensitivity, DelayedSkin TestsHypersensitivity, ImmediateDrug HypersensitivityImmunity, CellularSkinAllergensAntigensHypersensitivityAnaphylaxisDermatitis, ContactDrug EruptionsDiphenhydraminePassive Cutaneous AnaphylaxisDinitrofluorobenzeneArthus ReactionPicryl ChlorideIntradermal TestsDermatitis, Allergic ContactImmunoglobulin EHaptensOxazoloneDideoxynucleosidesStevens-Johnson Syndrome