Irritant contact dermatitis (nonimmune)

Gradual onset, over days, caused by hand washing, occlusion, antiseptics and glove chemicals; symptoms include redness, cracks, fissures, scaling

Allergic contact dermatitis, or type IV (delayed hypersensitivity)

Onset six to 48 hours after contact, caused by chemicals; symptoms include erythema, vesicles, papules, pruritus, blisters, crusting

Immediate hypersensitivity, or type I

Onset within minutes, very rarely longer than two hours, caused by latex; symptoms include local and generalized urticaria, feeling of faintness, feeling of impending doom, angioedema, nausea, vomiting, abdominal cramps, rhinoconjunctivitis, bronchospasm, anaphylactic shock