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Living with Symptomatic form of muscular dystrophy of Duchenne and Becker in female carriers

A genetic muscle condition in some female carriers of Duchenne or Becker gene changes, with muscle weakness and sometimes heart changes.

Understanding Symptomatic form of muscular dystrophy of Duchenne and Becker in female carriers

Symptomatic muscular dystrophy of Duchenne and Becker in female carriers is a genetic muscle condition that affects some females who carry the gene change.

People have varying degrees of muscle weakness from a slowly worsening muscle disease. Some also have heart muscle changes, such as an enlarged left lower heart chamber (dilated cardiomyopathy). Signs usually begin in adulthood.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Weakness in upper arm and upper leg muscles
  • Inward curve of the lower back
  • Shoulder muscle weakness
  • Muscle cramps with exercise
  • Stiff elbows

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include brain and nervous system specialists, genetic specialists and heart and blood vessel specialists.

  3. Consider genetic testing

    Changes in DMD are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    Children's Cardiomyopathy Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists); Heart and blood vessel specialists (cardiologists)
Expert care
Expert lists: Children's Cardiomyopathy Foundation
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Children's Cardiomyopathy Foundation
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
How often should my heart be checked?
Which exercise is safe for my muscles?
Would DMD gene testing help other family members?

Quick facts

Symptoms usually startAdult
InheritanceX-Linked
GenesDMD

Changes in the DMD gene cause this condition. It is X-linked, meaning the gene is on the X chromosome.

GeneticNeurological

Also known as: symptomatic form of muscular dystrophy of duchenne and becker in female carrier

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Symptomatic form of muscular dystrophy of Duchenne and Becker in female carriersGARD ID 20350 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

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