DURING the last decade, intravenous immunoglobulin (IVIG) has been used to treat several neurologic conditions.1,2However, because of the initial enthusiasm that followed the success of this treatment in some systemic autoimmune diseases, IVIG has been overused in the past few years; sometimes, use is based on only small uncontrolled studies. This review deals with IVIG overuse and emphasizes the precautions to be taken before prescribing treatment.