Sung-Yeon Sohn 
	
                                                                                                            Department of Neurology, Eulji University Hospital 95, Dunsanseo-ro, Seo-gu, Daejeon, 
Republic of Korea                                    	
                                    
 Case Report
                                                                        Neutropenia Following Intravenous Immunoglobulin Administration in a Patient with Multifocal Motor Neuropathy with Conduction Block                                     
Author(s): Sung-Yeon Sohn and Jae Guk KimSung-Yeon Sohn and Jae Guk Kim             
                                    
                                                                        
                             Intravenous immunoglobulin (IVIG) is the treatment of choice in patients with multifocal motor neuropathy with conduction block (MMNCB). Although IVIG is considered generally safe, neutropenia following IVIG infusion has been recognized as a rare hematologic side effect. Herein we report a patient with MMNCB who developed severe neutropenia following IVIG administration.  A 41 year old woman presented with progressive weakness of her left lower extremity with frequent muscle cramps. Nerve conduction study revealed marked conduction blocks on right ulnar and right tibial nerves. Serum IgM anti-GM1 antibody was detected. Neutrophil count decreased from day 2 and recovered after 2 weeks following IVIG infusion. To our knowledge, neutropenia following IVIG infusion in MMNCB has never been discussed apart, although it can be an important clinical issue especially for patients with MMNCB... View More»