Having a diagnosis of both Down’s syndrome and Autism or Autistic Spectrum Disorder (ASD) is sometimes known as dual diagnosis. Research findings vary but do suggest that the two conditions can co-exist and may not be unusual. The rate of dual diagnosis is not yet firmly established. There is not a set list of symptoms or behaviours, and each child will be different. Some children with Down’s syndrome who do not have ASD, may have some ASD type behaviours or traits, such as sensory processing difficulties and repetitive behaviours.
Some parents find this additional diagnosis helpful in understanding their child’s behaviour and identifying useful support strategies and provision for example within their child’s EHCP.
Here are links to useful sources of information and guidance on what to do it you suspect your child may have a dual diagnosis.
https://www.downs-syndrome.org.uk/about-downs-syndrome/lifes-journey/complex-needs-autism/
https://www.down-syndrome.org/en-gb/research/education-21/10
