Vocal Cord Dysfunction (VCD), also known as Exercise-induced Laryngeal Obstruction (EILO), is a condition in which the vocal cords or surrounding structures narrow or close during periods of high-intensity exercise, preventing proper respiration. Athletes often report the feeling of their throat closing and being "unable to get air in." This can be a terrifying and frustrating experience. While VCD/EILO is often misdiagnosed as exercise-induced asthma, it does not typically r