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Duchenne Muscular Dystrophy: Symptoms, Causes, Treatment

حثل دوشين العضلي

Quick summary

Duchenne muscular dystrophy causes progressive muscle weakness, usually beginning in childhood in boys. Early diagnosis and neurological, cardiac and respiratory follow-up matter; enlarged calves do not mean stronger muscles.

Medical disclaimer: This content is for educational purposes only and is not a substitute for consulting a qualified physician. Do not use this information for self-diagnosis or self-treatment.

What is Duchenne Muscular Dystrophy?

A protein protecting muscle fibers is affected, leading to progressive weakness and possible heart or breathing involvement. Progression and needs vary. Rehabilitation and mobility aids support independence and participation.

Related reading: Malnutrition and nutritional support.

Symptoms

Delayed walking, frequent falls, trouble running or climbing stairs and using the hands to rise from the floor may occur. These findings need assessment rather than being dismissed as laziness.

Causes

The disorder results from a dystrophin-gene variant on the X chromosome, inherited or newly arising. Some female carriers develop muscle or cardiac manifestations and need appropriate assessment.

Risk factors

X-linked inheritance makes males more commonly affected, but absence of family history does not exclude the disorder. Genetic counseling guides assessment of relatives and reproductive options without assuming they are affected.

Diagnosis

Evaluation includes neurological examination, muscle-enzyme testing and dystrophin-gene analysis. Additional investigations may clarify the diagnosis and treatment eligibility, with baseline cardiac and respiratory assessment.

Treatment

Care combines rehabilitation, cardiac and respiratory management and specialist-selected medicines. Mutation-directed or gene therapies do not suit every variant or disease stage. The US Elevidys indication was restricted to selected ambulatory patients with a serious liver-injury warning; current eligibility and local availability require verification.

Complications

Complications may include contractures, scoliosis, cardiomyopathy, respiratory weakness and bone problems. Care also addresses learning, nutrition and mental health rather than focusing on muscles alone.

Prevention

Follow-up, stretching, suitable activity and team-advised vaccination help reduce complications. Do not abruptly stop long-term steroids. Inform the anesthesia team of the diagnosis and medicines before any procedure.

When to see a doctor

Arrange early assessment for delayed motor milestones or increasing weakness. Breathing difficulty, choking, chest pain or fainting requires urgent care. Report jaundice, vomiting or deterioration promptly after a new treatment.

Scientific references

  1. Muscular dystrophy: diagnosis and care — NHS
  2. Duchenne and Becker muscular dystrophy — MedlinePlus Genetics
  3. Elevidys: serious liver injury warning and revised indication — FDA