About Secondary Progressive Multiple Sclerosis (MS)

Overview
Secondary Progressive Multiple Sclerosis (SPMS) is a type of multiple sclerosis that occurs after an initial phase of relapsing-remitting MS (RRMS). In SPMS, there is a transition from the pattern of symptom relapses and remissions to a gradual and steady worsening of symptoms. Unlike RRMS, there are no longer any signs of remission in SPMS. This progressive phase is characterized by a slow accumulation of neurological deficiency or disability over time, without the occurrence of relapses. SPMS may develop in most people with RRMS, but not everyone will progress to this stage. The age of onset for SPMS is typically around 40 years, and it affects both men and women in nearly equal numbers. It is important to note that the diagnosis of SPMS is usually made retrospectively based on a history of gradual worsening of disability outside of relapses.
Causes and Risk Factors

The causes of SPMS involve both inflammatory and neurodegenerative processes. The key basis of SPMS is neurodegeneration, which leads to the worsening of symptoms and disability over time.

Non-modifiable risk factors are factors that cannot be changed or controlled. Non-modifiable risk factors for SPMS include:

  • Genetic factors: Certain genetic variations, such as the presence of the allele HLA-DRB1*1501, have been associated with an increased risk of developing MS.
  • Sex: Females are more commonly affected by MS and have a higher cumulative hazard risk of relapses compared to males.

Modifiable risk factors are factors that can be influenced or changed. Modifiable risk factors for SPMS include:

  • Smoking: Smoking has been shown to negatively impact MS progression.
  • Low vitamin D levels: Adequate vitamin D levels may help reduce the risk of MS progression.
  • Obesity: Maintaining a healthy weight may be beneficial in managing MS progression.
  • Epstein-Barr virus (EBV) infection: EBV infection has been linked to an increased risk of developing MS and potentially influencing disease progression.

It's important to note that while these modifiable risk factors have been associated with MS progression, their direct causal relationship is still being studied. If you have concerns about your specific situation, it's best to consult with your healthcare professional.

Symptoms

The most common early symptoms of SPMS include:

  • Weakness or partial paralysis of the limbs
  • Difficulty walking
  • Poor bladder control
  • Vision problems, such as blurred or double vision or partial or complete vision loss

As SPMS progresses or reaches higher severity, additional symptoms may occur. These can include:

  • Tremors
  • Muscle stiffness (spasticity)
  • Exaggerated reflexes (hyperreflexia)
  • Cognitive symptoms, such as memory and attention problems
  • Fatigue
  • Balance problems and dizziness
  • Speech difficulties
  • Swallowing problems
  • Breathing difficulties
  • Seizures
  • Hearing loss

It's important to note that the symptoms and their severity can vary from person to person. If you are experiencing any of these symptoms, it is recommended to consult with a healthcare professional for an accurate diagnosis and appropriate management.

Diagnosis

To diagnose secondary progressive multiple sclerosis, healthcare providers commonly perform the following examinations, tests, and procedures:

  • Physical Exam: The healthcare provider will conduct a physical exam to look for physical signs of a medical problem, such as pain, swelling, or the presence of masses within the body.
  • Medical History: Gathering information about your medical history and any previous diagnoses is crucial for diagnosing SPMS.
  • Lab Tests: Specific lab tests, such as a blood draw, may be recommended to assess various factors related to SPMS.
  • Imaging Studies: Imaging studies like magnetic resonance imaging (MRI) can help visualize the brain and spinal cord to detect any abnormalities associated with SPMS.

To determine the stage or severity of SPMS, additional examinations, tests, and procedures may be performed:

  • Clinical Assessment: Your healthcare provider may conduct a comprehensive clinical assessment to evaluate your symptoms and their impact on your daily life.
  • Neurological Evaluation: A thorough neurological evaluation can help assess nerve function and identify any changes or progression of SPMS.
  • Cognitive Testing: Cognitive testing may be performed to evaluate any cognitive impairment associated with SPMS.
  • Visual Evoked Potential (VEP) Test: This test measures the electrical activity in the visual pathway to assess any visual impairments caused by SPMS.

It's important to note that specific examinations, tests, and procedures may vary depending on individual circumstances and healthcare provider preferences. Always consult with your healthcare provider for personalized recommendations.

Treatment Options

The goals of treatment for SPMS are to slow the disease progression, manage symptoms, and improve quality of life. Here are the different approaches used to achieve these goals:

  • Disease-Modifying Therapies: These medications aim to reduce the frequency and severity of MS attacks. They work by targeting specific immune mechanisms involved in MS progression.
  • Symptomatic Treatments: These therapies focus on managing the chronic symptoms of SPMS. They include medications to alleviate fatigue, cognitive impairment, depression, and sphincter dysfunction. Symptomatic treatments can significantly improve quality of life.
  • Health Behavior Changes: Making certain lifestyle changes can help manage SPMS symptoms and slow down disease progression. These include regular exercise, maintaining a healthy diet, managing stress levels, getting enough restful sleep, and avoiding smoking.
  • Rehabilitation Therapies: Physical therapy, occupational therapy, and speech therapy can help manage symptoms and improve mobility, coordination, strength, and speech in individuals with SPMS.
  • Supportive Care: Supportive care involves providing emotional support and assistance with daily activities to enhance overall well-being.

It's important to note that treatment plans should be personalized based on individual needs and preferences. Always consult with your healthcare professional for personalized advice regarding medication types and dosing.

Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation. Other side effects can occur. Check with your health care professional or read the information provided with your medication for additional side effect information.