| A rare idiopathic nephrotic syndrome characterized by the triad of proteinuria, hypoalbuminemia and edema in patients who do not respond, or only partially respond to the initial trial of corticosteroids. Patients may be multidrug resistant or may be sensitive to second-line immunosuppressive therapy. After exclusion of the genetic forms, steroid-resistant nephrotic syndrome may result from a circulating permeability factor its presence may result in a relapse of nephrotic syndrome after kidney transplantation. Steroid-resistant nephrotic syndrome can also be secondary to an infection (such as cytomegalovirus) or an underlying kidney disease (such as immunoglobulin A nephropathy). |