Amoxicillin Adverse Cutaneous Reaction Versus Post Streptococcal Vasculitis: Lymphocyte Transformation Test Solved the Question.

In children, skin rashes are a frequent manifestation of infectious diseases, or they could also be the result of a drug hypersensitivity reaction, especially after antibiotic intake. We report the case of a 5-year-old girl investigated for a suspected post streptococcal vasculitis where differential diagnosis was improved by an allergy work-up and confirmed by lymphocyte transformation test.