Secondary Progressive Multiple Sclerosis (SPMS): A Patient Guide

Secondary Progressive Multiple Sclerosis (SPMS) represents a transition in the way the disease behaves over time. For many, MS begins with a relapsing-remitting course characterized by distinct attacks followed by periods of recovery. SPMS develops when this pattern shifts toward a more gradual and persistent accumulation of physical or cognitive challenges that occur independently of those earlier episodic relapses ^[1][2]. This shift is not a sudden biological switch; rather, it is a slow evolution where the underlying disease mechanisms transition from being dominated by periodic inflammation to a more continuous, overlapping process of neurodegeneration and compartmentalized inflammation ^[3].

Understanding your specific presentation of SPMS is critical. Clinicians primarily distinguish between “active” disease—where there is still evidence of new inflammatory activity on an MRI or through a clinical relapse over a recent period—and “non-active” disease, where such visible signs are absent ^[4]. This activity status is an important consideration, though not the sole determinant, in deciding whether to continue, switch, or start disease-modifying therapies (DMTs). Treatment choices also heavily depend on your age, prior medication responses, comorbidities, and personal preferences ^[5][6].

Activity vs. Progression: A Quick Summary

• Activity: Refers to active inflammation, identified by clinical relapses or new/enlarging spots on an MRI over a defined period.
• Progression: Refers to the gradual worsening of daily function and disability over time, independent of relapses.
• Note: You can have activity without progression, progression without activity, both, or neither. These states can change over time.

As the disease moves into this progressive phase, the focus of your medical care naturally expands. While managing inflammation remains a goal for many, equal importance is placed on a multidisciplinary approach to managing daily life ^[7]. This involves proactively addressing the symptoms that most impact your independence, such as mobility changes, fatigue, bladder function, and cognitive processing speed. By working with a diverse team of specialists—including physical therapists and urologists—you can focus on maintaining your function and protecting your overall quality of life ^[8].

Living with SPMS means navigating a more subtle, long-term relationship with your health. Because the changes are often slow, monitoring requires a steady, consistent approach to clinical testing and imaging to track your progress accurately over time ^[9]. With a clear understanding of your disease activity and a proactive management plan, you can take a central role in directing your care and maintaining your daily priorities ^[2].