Guillain-Barre Syndrome is an acute immune-mediated inflammatory disorder of the peripheral nervous system. It has several subtypes defined by the location of damage within the nerves. Treatment involves immunotherapy such as plasmapheresis or intravenous immunoglobulins to reduce immune attack on nerves. Rehabilitation focuses on preventing complications, gradually increasing mobility and strength as recovery occurs, and managing symptoms like pain and fatigue. Outcomes vary but many patients are left with some degree of permanent weakness or disability.