Adult idiopathic neutropenia

Definition

A rare acquired immunodeficiency disease characterized by adult-onset absolute neutrophil counts less than 1.5 x 10^9/L on at least 3 occasions in a 3 month period that cannot be attributable to drugs or a specific genetic, infectious, inflammatory, autoimmune or malignant cause. Recurrent aphtous stomatitis and a history of mild bacterial infections are typically associated. A benign outcome with a low rate of severe infections and no secondary malignancies is observed.