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- W2007821709 abstract "Background Clarithromycin is one of the most frequently prescribed oral macrolidic antibiotics in the pediatric population. Suspected adverse reactions to clarithromycin have been frequently described by parents of children examined in pediatric allergy units, but there is a lack of reliable methods available in detecting the presence of specific IgE antibodies. Objective To investigate the prevalence of a clarithromycin allergy in children seen in a pediatric allergy unit using standardized skin tests and oral provocation tests (OPTs). Methods Sixty-four children were referred with a history of a clarithromycin-associated adverse drug reaction. All these children underwent skin tests and OPTs. The nonirritating intradermal skin test concentration for clarithromycin was determined in a control group of 18 children who had tolerated clarithromycin in the previous month. Results The threshold nonirritating intradermal concentration was established at the 10:2 dilution (0.5 mg/mL). Nine of the 64 children had an immediately positive intradermal response to the 10:2 dilution and only 1 child to the 10:3 dilution (0.05 mg/mL). None had positive skin prick test results or delayed skin responses to intradermal tests. Four of 64 children (6%) with previously described adverse reactions due to clarithromycin intake had a positive OPT reaction. When we correlated the intradermal skin test results to the OPT results, intradermal test sensitivity and specificity were 75% and 90%, respectively. Conclusion Intradermal tests seem to be useful in allergologic workup in children with suspected clarithromycin hypersensitivity and may help reduce the need for OPTs. Clarithromycin is one of the most frequently prescribed oral macrolidic antibiotics in the pediatric population. Suspected adverse reactions to clarithromycin have been frequently described by parents of children examined in pediatric allergy units, but there is a lack of reliable methods available in detecting the presence of specific IgE antibodies. To investigate the prevalence of a clarithromycin allergy in children seen in a pediatric allergy unit using standardized skin tests and oral provocation tests (OPTs). Sixty-four children were referred with a history of a clarithromycin-associated adverse drug reaction. All these children underwent skin tests and OPTs. The nonirritating intradermal skin test concentration for clarithromycin was determined in a control group of 18 children who had tolerated clarithromycin in the previous month. The threshold nonirritating intradermal concentration was established at the 10:2 dilution (0.5 mg/mL). Nine of the 64 children had an immediately positive intradermal response to the 10:2 dilution and only 1 child to the 10:3 dilution (0.05 mg/mL). None had positive skin prick test results or delayed skin responses to intradermal tests. Four of 64 children (6%) with previously described adverse reactions due to clarithromycin intake had a positive OPT reaction. When we correlated the intradermal skin test results to the OPT results, intradermal test sensitivity and specificity were 75% and 90%, respectively. Intradermal tests seem to be useful in allergologic workup in children with suspected clarithromycin hypersensitivity and may help reduce the need for OPTs." @default.
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- W2007821709 date "2010-05-01" @default.
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- W2007821709 title "Sensitivity and specificity of skin tests in the diagnosis of clarithromycin allergy" @default.
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- W2007821709 doi "https://doi.org/10.1016/j.anai.2010.03.010" @default.
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