Medical management of Duchenne muscular dystrophy
Reviewed by Duchenne muscular dystrophy (DMD) is a genetic disease characterized by the progressive deterioration of muscle fibers. Among more than 30 different types of muscular dystrophy, DMD is the most common.
While there is currently no cure for the disease, several DMD treatments can help slow its progression, preserve muscle strength, protect vital organs, and maintain patients’ independence.
How is Duchenne muscular dystrophy managed?
DMD medical management combines multiple therapeutic approaches, including:
- medications
- physical, speech, and occupational therapies
- different approaches to heart and lung care, including medications and equipment
- nutrition management
- support for cognitive, learning, and behavioral disorders
- surgical interventions when appropriate
Because DMD symptoms affect multiple organ systems and vary significantly from person to person, a multidisciplinary Duchenne care team collaborates on a personalized care plan. This team typically includes specialists in neuromuscular, endocrine, cardiac, pulmonary, nutritional, physiatry, psychosocial, and orthopedic health.
As the disease progresses and a patient’s needs change, the care team adapts the plan to maximize comfort and function.
Which treatments may slow DMD progression?
Disease-modifying drugs aim to prevent DMD muscle changes from worsening. Steroids, HDAC inhibitors, and targeted genetic therapies represent the primary treatments that slow DMD progression, while ongoing clinical trials evaluate additional options.
Corticosteroids
Corticosteroids for Duchenne, such as prednisone, Emflaza (deflazacort), and Agamree (vamorolone), can increase muscle strength. However, these medications carry numerous side effects that may limit their long-term use. While steroid therapy has served as the baseline standard of care for years, newer targeted approaches continue to emerge.
If a person with DMD starts a course of corticosteroids, abruptly stopping the medication presents a life-threatening risk of adrenal crisis.
Genetic therapies
Genetic therapies aim to alter how genes function and interact within the body.
Exon skipping represents an innovative molecular therapy that addresses the underlying genetic cause of DMD. Exondis 51 (eteplirsen) targets the specific mutation found in roughly 13% of DMD patients. Three other approved exon-skipping medications exist today, with additional candidates undergoing clinical trials.
Another approach delivers a shortened version of the dystrophin gene — the genetic instructions missing in DMD that enable the body to build functional dystrophin protein. This therapy is currently available only to non-ambulatory patients and requires rigorous medical monitoring for several months after administration.
Stop codon read-through
Stop codon read-through is another therapeutic strategy that addresses underlying genetic causes. Translarna is an investigational treatment for patients with DMD caused by a nonsense mutation, a gene change that produces non-functional proteins.
This approach aims to enable the production of full-length, functional dystrophin protein. While Translarna held conditional authorization from the European Medicines Agency for several years, the European Commission formally decided not to renew its marketing authorization in March 2025. The U.S. Food and Drug Administration has not approved the drug.
HDAC inhibitors
Overactive HDAC enzymes in DMD contribute to impaired muscle repair, increased fat deposition, fibrosis, and inflammation. Duvyzat (givinostat), an approved HDAC inhibitor in the U.S., has been shown to slow disease progression across patients regardless of their specific mutation.
How are mobility and physical health supported?
DMD severely restricts movement over time. Specific treatments, physical therapies, and surgical procedures can reduce joint contractures, support mobility, and improve posture.
Physical therapy
A contracture is a joint fixation that causes tendons to shorten, commonly affecting ankles, knees, hips, fingers, wrists, and elbows. Range-of-motion exercises help postpone the development of contractures.
Physical therapy for DMD teaches proper exercise technique and identifies activities that maintain muscle tone without causing damaging muscle stress.
Adaptive devices
Adaptive devices like braces or orthoses support the ankles and feet. Walkers and wheelchairs further assist with balance and mobility.
Although standing benefits posture and circulation, it becomes difficult for many DMD patients. Standing frames (“standers”) that hold an individual in a forward tilt make standing comfortable while providing weight-bearing benefit for Duchenne bone health.
Orthopedic surgery
When contractures severely restrict joint movement, surgical intervention can offer relief.
Surgery also addresses scoliosis (a sideways curvature of the spine), which frequently develops after a person transitions to a wheelchair. Surgeons can insert spinal rods to align the spine, evaluating each patient on a case-by-case basis.
How are heart and breathing issues managed?
DMD weakens cardiac and respiratory muscles, including those in the abdomen, chest wall, and diaphragm.
Consequently, specialists screen patients for cardiac and pulmonary issues from diagnosis onward, introducing supplemental oxygen and heart medications as needed.
Heart medications
Angiotensin-converting enzyme (ACE) inhibitors, selective aldosterone receptor agonists, and beta-blockers can slow the progression of heart muscle deterioration. Patients may also require DMD cardiac care to manage irregular heart rhythms.
Cardiologists often start DMD patients on medication as soon as imaging (such as an echocardiogram or cardiac MRI) detects early structural changes, though emerging data support starting treatment even earlier.
Respiratory care
As breathing muscles weaken, secretions build up within the respiratory system. DMD respiratory care helps clear these secretions, facilitating easier breathing.
Cough-assist devices and manually assisted coughing help clear airways. Patients with sleep apnea often benefit from BiPAP machines, and some eventually use noninvasive or mechanical ventilation.
What other supportive care may be needed?
DMD and its treatments impact bone density, hormone regulation, cognition, and emotional health. Multidisciplinary care for DMD helps patients manage nutrition, developmental challenges, mental health, and bone fragility.
Bone health
DMD patients face an elevated risk of poor bone health. Long-term corticosteroid use frequently weakens bones in the spine and legs, increasing fracture risks. Maintaining bone health requires proactive medical management:
- Consuming adequate calcium and vitamin D through diet or supplements
- Undergoing regular screening for scoliosis from the neuromuscular team
- Obtaining lateral spine X-rays every 1-2 years after starting steroids to detect asymptomatic compression fractures
- Scheduling DEXA scans to measure bone density
- Practicing recommended weight-bearing exercises and daily stretching
- Using supportive footwear, mobility devices, and safety belts to prevent falls
- Utilizing intravenous bisphosphonate therapy or orthopedic surgery if osteoporosis or fractures occur
Growth and hormone problems
Corticosteroids suppress natural hormone production, which can delay puberty and lead to shorter stature. Working with a pediatric endocrinologist helps evaluate and manage hormone levels through:
- regular tracking of height and physical growth
- monitoring for signs of delayed puberty
- considering hormone replacement therapies, such as growth hormone or testosterone
Diet, nutrition, and swallowing/chewing issues
Reduced physical activity combined with corticosteroid use often leads to weight gain. A balanced diet supports a healthy weight through several key strategies:
- Eating a protein-rich breakfast
- Choosing foods with less than nine grams of sugar per serving
- Limiting sodium intake and avoiding added salt
- Grilling, baking, or broiling lean proteins instead of frying
- Including salads and non-starchy vegetables with meals
- Managing portion sizes
Because weak abdominal muscles and immobility frequently cause constipation, a diet rich in fluid and fiber supports digestion.
Navigating DMD nutrition management can feel overwhelming, but a registered dietitian can design a customized meal plan.
If chewing or swallowing becomes difficult, or if significant weight loss occurs, patients may receive supplemental nutrition through a gastrostomy tube (G-tube) placed directly into the stomach.
Learning disabilities and behavioral disorders
Roughly one in three patients with DMD experiences learning disabilities affecting reading, writing, or math.
A neuropsychologist can recommend tailored educational strategies, while public schools offer support through 504 plans (classroom accommodations) or Individualized Education Plans (which adjust the core curriculum).
Parents should discuss these options with their care team and school administrators.
Additionally, neurodivergent conditions like attention deficit/hyperactivity disorder and autism occur more frequently in DMD. Depending on the diagnosis, management may involve behavioral therapy, environmental adaptations, or targeted medications.
Mental health support
DMD increases the risk of depression and anxiety. Selective serotonin reuptake inhibitors can help regulate mood, while counseling and psychotherapy offer essential coping strategies. Seeking a therapist experienced in neuromuscular conditions ensures specialized support.
How does DMD care change over time?
As muscle strength decreases and the disease transitions from ambulatory to non-ambulatory phases, support strategies evolve to preserve comfort, health, and autonomy.
The following table outlines changes in Duchenne treatments by disease stage.
Scroll horizontally to view all columns -->
| Stage | Main clinical focus | Key interventions |
|---|---|---|
| Diagnosis and early ambulatory (Childhood) | Preventing disease progression, maintaining muscle strength, tracking developmental milestones, and managing steroid side effects |
|
| Late ambulatory (transitional) phase (Late childhood/adolescence) | Managing quadriceps weakness, balance shifts, fatigue over long distances, and emotional coping |
|
| Early non-ambulatory (Adolescence) | Preserving upper limb function, spine alignment, airway clearance, and initiating adult transition planning |
|
| Late non-ambulatory (Adult stage) | Maintaining upper limb/finger function, respiratory and cardiac health, quality of life, independence, and adult care continuity |
|
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