Learn About Sclerosis Treatment Options

Understanding Sclerosis: Types and How They Affect the Body

Sclerosis refers to the hardening or scarring of body tissues, and it can affect different parts of the nervous system in different ways. The most common form is multiple sclerosis (MS), which affects about 1 in 400 people in the United States, according to the National Multiple Sclerosis Society. When someone has MS, their immune system mistakenly attacks the protective coating around nerve fibers, called myelin. This damage slows or blocks messages between the brain and the rest of the body.

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There are several types of MS that doctors recognize. Relapsing-remitting MS (RRMS) is the most common form, affecting about 85% of people when they are first diagnosed. In RRMS, people experience periods of new or worsening symptoms called relapses, followed by periods of recovery called remissions. Secondary progressive MS (SPMS) develops when RRMS gets worse over time, with fewer remission periods and more consistent disability progression. Primary progressive MS (PPMS) involves steady worsening from the beginning, without clear relapse and remission cycles. Progressive-relapsing MS (PRMS) is the rarest form, marked by steady worsening combined with occasional relapses.

Beyond MS, other forms of sclerosis exist. Amyotrophic lateral sclerosis (ALS) affects nerve cells that control voluntary muscles, leading to progressive weakness. Lateral sclerosis affects the side portions of the spinal cord where these nerve cells live. Systemic sclerosis is a connective tissue disease that can affect skin, blood vessels, and internal organs. Understanding which type of sclerosis someone has is crucial because treatment approaches differ significantly between these conditions.

Symptoms vary widely depending on which nerves are affected. Common symptoms include fatigue, difficulty walking, numbness or tingling, blurred vision, and problems with balance or coordination. Some people experience cognitive changes, mood shifts, or pain. The unpredictable nature of these conditions means that treatment must often be adjusted over time as symptoms and disease progression change.

Practical Takeaway: Knowing which type of sclerosis exists in your situation is the foundation for understanding what treatment options might be relevant. Ask your healthcare provider to clearly explain your diagnosis type, as this determines which medications and therapies doctors typically recommend.

Disease-Modifying Therapies: Slowing Progression

Disease-modifying therapies (DMTs) represent the primary treatment approach for MS, particularly for relapsing forms. These medications work by reducing the immune system's attack on nerve fibers, thereby decreasing the frequency and severity of relapses. Importantly, DMTs do not cure MS, but research shows they can slow the progression of disability and reduce the number of new brain lesions that appear on MRI scans. The FDA has approved more than a dozen different DMTs, offering patients various options based on their specific disease course and health circumstances.

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Injectable DMTs were among the first treatments developed. Interferon beta-1a and interferon beta-1b are synthetic versions of proteins the body naturally produces. These medications are injected either into muscle or under the skin on a regular schedule, ranging from three times per week to once per month. Glatiramer acetate is another injectable that modifies immune response and is typically given daily or three times weekly. These injectable options have been used for many years, with extensive safety records spanning decades.

Oral medications have expanded treatment choices significantly. Fingolimod, dimethyl fumarate, teriflunomide, and siponimod are pills taken daily or twice daily that can be taken at home. Cladribine is an oral therapy given in pulses over a two-year period. These medications work through different mechanisms—some reduce lymphocyte counts, others reduce inflammation markers, and others affect immune cell trafficking. For many patients, oral medications offer greater convenience compared to injections, though they may require periodic blood work monitoring.

Monoclonal antibody therapies represent a newer class of DMTs. These are infusion medications given intravenously or by subcutaneous injection. Natalizumab, alemtuzumab, ocrelizumab, and ixekizumab target specific immune cells or inflammatory pathways. These typically more potent medications may be recommended for patients with highly active disease or those who have not responded well to other treatments. Infusion medications require administration at medical facilities or sometimes at home with trained nurses, but are often given less frequently—some as infrequently as twice per year.

Starting a DMT early in MS diagnosis generally produces better long-term outcomes. Studies show that beginning treatment within the first year of diagnosis can reduce disability accumulation by 30% or more over five years compared to delayed treatment. However, choosing the right DMT involves balancing effectiveness against side effects, dosing schedule, monitoring requirements, and individual health factors.

Practical Takeaway: Work with your neurologist to discuss which DMT categories might align with your disease type, lifestyle, and health profile. Ask about the expected benefits based on clinical trials, required monitoring, and how long it typically takes to see improvements in disease activity.

Managing Relapses and Acute Symptoms

While disease-modifying therapies work to prevent relapses over time, treatment for active relapses requires a different approach. When someone experiences a relapse—a sudden worsening of symptoms or new symptoms—quick treatment can help reduce severity and speed recovery. High-dose intravenous methylprednisolone is the standard acute treatment, given daily for three to five days, often in a hospital or infusion center. This corticosteroid powerfully reduces inflammation in the nervous system and has been used for MS relapses for decades.

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After intravenous methylprednisolone treatment concludes, doctors sometimes prescribe oral corticosteroids, usually prednisone, taken for one to two weeks to continue the anti-inflammatory effect. Not all relapses require treatment—some people experience mild symptoms that resolve on their own within days or weeks. However, relapses affecting vision, walking ability, or other important functions typically warrant prompt treatment because early intervention appears to produce faster symptom recovery.

For people who cannot tolerate corticosteroids or who experience severe relapses unresponsive to standard therapy, plasma exchange (plasmapheresis) may be an option. This procedure filters the blood to remove antibodies and other immune factors thought to drive inflammation. It requires hospitalization and multiple treatments over one to two weeks, but can provide significant benefit for some patients with severe relapses.

Beyond pharmacological treatment, rehabilitation therapy during and after relapses helps people regain function. Physical therapy addresses mobility and balance problems. Occupational therapy helps people maintain independence in daily activities. Speech-language pathology treats swallowing or speech difficulties. These rehabilitation services work alongside medication to maximize recovery and help people rebuild strength and coordination after relapse-related damage.

Symptom management during relapses also matters significantly. Pain medications, muscle relaxants, or anti-spasticity drugs may be prescribed if relapse symptoms include pain or muscle stiffness. Fatigue management through rest, activity pacing, and sometimes medications like amantadine can help people function better during acute episodes.

Practical Takeaway: Understand the signs that warrant contacting your neurologist immediately—new vision loss, significant weakness, or loss of balance typically require urgent evaluation. Have a plan in place for how to reach your healthcare team if relapse symptoms develop, since early treatment produces better outcomes.

Symptomatic Treatments and Quality of Life

Beyond slowing disease progression and managing acute relapses, treatment for sclerosis conditions includes managing individual symptoms that affect daily life. These symptomatic treatments do not alter disease course but can significantly improve comfort and function. For MS specifically, fatigue is the most common symptom, affecting 75-90% of patients at some point. While there is no cure for MS-related fatigue, medications like amantadine or modafinil may provide some benefit. Energy conservation strategies—planning activities around peak energy times, breaking tasks into smaller segments, and prioritizing essential activities—often provide the most reliable fatigue management.

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Spasticity, the involuntary muscle tightness or stiffness that occurs in about half of MS patients, responds to several treatment options. Baclofen is an oral muscle relaxant that reduces spasticity for many people. Tizanidine is another option with a different mechanism. For focal spasticity