What is Primary Progressive Multiple Sclerosis?
Primary progressive multiple sclerosis (PPMS) is a form of multiple sclerosis that affects the brain and spinal cord. It disrupts how signals travel between your brain and the rest of your body.
Unlike other types of MS, PPMS causes symptoms that slowly worsen over time without clear periods of improvement. While the pace of change can vary, the condition tends to progress steadily.
PPMS occurs when the body’s immune system mistakenly attacks myelin, the protective layer around nerves. This damage slows or blocks communication between the brain and body.
The exact cause is not fully understood. A combination of immune system activity, genetics, and environmental factors may play a role.
Symptoms
PPMS symptoms often develop gradually and may affect movement, sensation, and daily function.
Common symptoms include:
- Trouble walking or stiffness in the legs
- Muscle weakness or spasms
- Balance and coordination problems
- Numbness or tingling sensations
- Vision changes
- Ongoing fatigue
- Dizziness or shakiness
- Difficulty thinking clearly
- Mood changes, including depression
- Problems with bladder or bowel control
- Sexual health concerns
How is it diagnosed?
Diagnosing PPMS takes time and careful evaluation. Providers look for a gradual worsening of symptoms rather than sudden flare-ups.
Your care team may use:
- A detailed review of your symptoms and medical history
- A neurological exam to assess strength, balance, and reflexes
- MRI scans to check for changes in the brain and spinal cord
- Blood tests to rule out other conditions
- A spinal tap to evaluate fluid around the brain and spine
- Vision and nerve function tests
Because PPMS progresses slowly, confirming the diagnosis may require monitoring symptoms over time.
How is it treated?
While there is no cure for PPMS, treatment focuses on slowing progression and improving daily life.
Treatment options may include:
- Medications such as ocrelizumab can help slow disease activity
- Therapies to manage symptoms like fatigue, pain, or mood changes
- Physical therapy to improve strength, mobility, and balance
- Occupational therapy to support daily activities and independence
Healthy habits can also make a difference. Regular movement, good sleep, and avoiding overheating may help reduce symptom flare-ups.
Over time, your care plan may be adjusted to meet your changing needs.
