Mazzotti reaction after presumptive treatment for schistosomiasis and strongyloidiasis in a Liberian refugee.

We report a case of the Mazzotti reaction in a 13-year-old Liberian refugee after presumptive treatment of schistosomiasis and strongyloidiasis with ivermectin, praziquantel and albendazole. The patient was hospitalized with fever, urticaria, abdominal pain and angioedema. Twelve hours after treatment with intravenous methylprednisolone he had complete resolution of his symptoms.