Posted in Web Syringomyelia: Symptoms, Causes, Diagnosis, Treatment January 4, 2021 Syringomyelia is a long-term condition that causes fluid-filled cysts, which doctors call “syrinx,” to form inside your spinal cord. You may also hear it called hydromyelia, syringohydromyelia, or… https://www.webmd.com/brain/what-is-syringomyelia