What are the signs and symptoms of Duchenne?

Knowing the signs of Duchenne is important, because early recognition empowers families to seek support, connect with others facing similar experiences, and prepare emotionally.

Common or early signs

Duchenne children usually start showing signs and symptoms between 2 – 4 years of age and they include:1

Delay in independent standing

Enlarged calves

Walking on the balls of their feet (tip-toe gait)

Difficultly walking, jumping and hopping

Frequent falls

Using the Gower’s Manoeuvre

Progressive muscle weakness

Fatigue2

Weakness in the legs, pelvis, arms and neck

Why do the early signs of Duchenne sometimes go unnoticed?

They can be subtle, like frequent falls or difficulty climbing stairs.3 Whilst most cases are diagnosed early, it is important that the
symptoms are reported to a healthcare professional as soon as they become apparent.

Progression

As the disease progresses, muscle weakness becomes more pronounced, leading to increased difficulties with mobility and daily activities. Initial symptoms begin progressing to the arms, lower legs, and trunk (usually during teenage years). Over time the disease also compromises the correct functioning of the heart and lungs. The reduction or absence of dystrophin in the muscles can affect the heart and lungs.1

Difficultly raising arms

Loss of ambulation

Scoliosis (spine curve disorder)

Respiratory impairment

Restrictive lung disease

Need for ventilatory support

Arrhythmia

Cardiomyopathy

Heart failure

Duchenne progresses differently in every person

Despite their genetic mutation, everyone living with Duchenne will display their own symptoms at different stages. The progression of the disease and symptoms will vary from subtle to severe symptoms. These can be early or late onset.4

Duchenne affects not only physical health but also mental health.1 Families face the challenges of caregiving, adapting to changing abilities, and coping with uncertainty.5

1. Van Ruiten H, Bushby K, Guglieri M. State-of-the-art advances in Duchenne muscular dystrophy. EMJ. 2017;2(1):90-9.

2. El-Aloul B, Speechley KN, Wei Y, Wilk P, Campbell C. Fatigue in young people with Duchenne muscular dystrophy. Dev Med Child Neurol. 2020;62:245-251.

3. Ryder S, Leadley RM, Armstrong N, Westwood M, de Kock S, Butt T, and al. The burden, epidemiology, costs and treatment for Duchenne muscular dystrophy: an evidence review.

4. Website: Parent Project Muscular Dystrophy – What is Duchenne ? Progression.

5. Website : WebMD – The Challenges of Caregiving for People With Duchenne Muscular Dystrophy.