When a child is diagnosed with Duchenne muscular dystrophy (DMD), families prepare for challenges related to muscle weakness, mobility and progressive loss of function. But children with DMD are also at an increased risk of cognitive and behavioral challenges, including autism spectrum disorder (ASD).
What is autism spectrum disorder?
ASD affects how individuals interact with others, communicate, learn and behave. It’s characterized by sensory processing differences, repetitive behaviors, focused interest and the need for routine and predictability.
Autism affects about one in 31 children aged 8 and younger in the United States.
The link between Duchenne and autism
DMD is caused by mutations in the dystrophin gene, which produces dystrophin, a protein essential for healthy muscle function.
When dystrophin is missing or defective, the impact extends beyond muscles. Dystrophin is also found in the brain, where it plays a role in how neurons connect and communicate. Research suggests that some boys with DMD may experience learning difficulties, speech and language delays, attention challenges and in some cases, traits consistent with autism.
Studies estimate that up to 19% of boys with DMD also meet criteria for ASD.
Learn more about DMD causes and risk factors
Recognizing the signs of autism
Autism in children with DMD may present in the following ways:
- Delayed speech and language compared to peers.
- Difficulty with social interactions, such as making eye contact or engaging in back-and-forth conversation.
- Repetitive behaviors or intense interests.
- Sensitivity to sound, light or textures.
Because many of these challenges overlap with the broader cognitive difficulties that can occur with DMD, autism can sometimes go unnoticed or be diagnosed later than in children without DMD. Early recognition is key, since support and interventions can make a significant difference.
Support and resources
If you suspect your child with DMD may also have autism, talk to your neuromuscular specialist or pediatrician about a developmental evaluation. Many hospitals that treat Duchenne work closely with neuropsychologists and developmental specialists who understand the overlap.
Families may also benefit from connecting with organizations that support both conditions. Parent networks, online forums and advocacy groups can provide practical advice and emotional support from others who are navigating the same journey.
Future outlook
As researchers continue to study the brain’s role in Duchenne, the hope is to develop better therapies that address not only muscle weakness but also cognitive and behavioral challenges.
For now, awareness is the first step. Recognizing that autism can be part of the DMD experience empowers families to seek the right interventions early.
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