Primary Progressive Multiple Sclerosis (PPMS) is a chronic neurological disorder characterized by the gradual and relentless progression of disability, compared to the more common relapsing forms of MS. When discussing this condition, it can be helpful to explore synonyms that might offer a different perspective. One synonym for PPMS is "chronic progressive multiple sclerosis", emphasizing the long-lasting and steadily worsening nature of the disease. Another term used is "non-relapsing multiple sclerosis", highlighting the absence of distinct relapses in PPMS patients. Additionally, "continuous multiple sclerosis" can be an alternative description for the uninterrupted advancement of disability in individuals affected by PPMS. These synonyms provide a nuanced understanding of this specific form of multiple sclerosis.