Acute necrotizing eosinophilic myocarditis possibly triggered by an antimigraine drug as an uncommon cause of acute heart failure: a case report.

The case is particularly unique for its suspected predisposing trigger: an antimigraine drug. A possible systemic hypersensitivity reaction, reflected by the occurrence of concomitant severe serum eosinophilia, acute myocarditis, and central nervous system vasculitis, was successfully treated with steroids, further supporting the diagnosis.