TABLE 2.

Types of Allergic Reactions to Penicillins and Cephalosporins33

Immediate (within 1 h) and accelerated (1–72 h), IgE mediated
    Urticaria
    Laryngeal edema
    Bronchospasm
    Hypotension
    Local swelling
Late (after 72 h)
    Morbilliform rash
    Serum sickness
    Urticaria
Other late reactions
    Stevens-Johnson syndrome
    Interstitial nephritis
    Pulmonary infiltration
    Vasculitis
    Hemolytic anemia
    Neutropenia
    Thrombocytopenia