What is Guillain-Barré syndrome (GBS)? Science What is Guillain-Barré syndrome (GBS)? Daily Trends January 12, 2022 Guillain-Barré (Ghee-YAN Bah-RAY) syndrome (GBS) is a rare, autoimmune disorder in which a person’s own immune system... Read More Read more about What is Guillain-Barré syndrome (GBS)?