PEDIATRICS Vol. 103 No. 4 April 1999, p. e50
ELECTRONIC ARTICLE:
Anaphylactic Reaction to Oral Cefaclor in a Child
Received May 15, 1998; accepted Nov 16, 1998.
University of Toronto Department of Paediatrics, Division of Immunology/Allergy Hospital for Sick Children Toronto, Ontario, Canada M5G 1X8
Adverse drug reactions are a common clinical problem. It has been estimated1 that 6% to 15% of hospitalized patients experience some sort of adverse drug reaction. Clinical manifestations of adverse drug reactions include skin rash; a serum sickness-like reaction; drug fever; pulmonary, hepatic, and renal involvement; and systemic anaphylaxis. Many of these adverse events are not immunologically mediated. Actual allergic or immunologic drug reactions probably account for <25% of adverse drug reactions overall.1
Antibiotics are one of the major contributors to drug hypersensitivity.
Cefaclor, an oral second-generation cephalosporin with a
-lactam
ring, is used against various infectious diseases of the respiratory
tract, especially in children. Several cases of cefaclor
hypersensitivity have been reported.2,3 The most common
presentations are either erythematous or papular eruptions, although
serum sickness-like reactions have also been described. Anaphylactic
reactions, although rare, have been observed in adults. Here we report
a case of anaphylactic reaction to cefaclor in a 21/2-year-old
patient.
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