Signs &
of Duchenne


While diagnosis typically happens around 5 years of age, children usually demonstrate signs and symptoms earlier due to delays in developmental milestones, such as walking with assistance and talking.

Most commonly observed early signs and symptoms in patients with Duchenne:

Physical signs and symptoms include:

Gowers’ sign on rising from floor

Enlarged calves

Toe walking

Difficulty walking, jumping, or climbing stairs


The presence of Gowers’ sign in a male child should trigger a diagnostic investigation

Cognitive and behavioral signs and symptoms include:

  • Difficulty understanding information
  • Speech delay or difficulty talking
  • Learning and attention issues
  • Behavioral issues

The average age at which the earliest signs and symptoms of Duchenne are noticed is 2.5 years

Duchenne may result in additional physical and mental symptoms that aren’t listed here. Remember to discuss any and all signs and symptoms with your child’s healthcare team

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Timely and accurate diagnosis may enable YOUR CHILD to receive the care and support they need

Treatment and management strategies may delay disease progression and complications

Disease management strategies may delay loss of ambulation and enable your child to maintain their way of life for as long as possible

Expected increased life span with improved multidisciplinary care

Access to genetic counseling and family planning

Testing for carrier status

Access to emerging therapies and clinical trials