. "Idiopathic disorders are disorders of unknown cause.InhibitorIn medicine and pharmacology, an inhibitor is a substance that delays or inhibits biochemical processes.IncidenceThe incidence is the number of new cases of a certain disease in the population (see prevalence).Intravenous Injection (i.v.)See i.v.Kalbitor??Brand name for Dyax Corp. kallikrein inhibitor." . . .