Autism vs. Down Syndrome: What Parents Should Know

by | 19 Mar 2024 | Autism, Blog

In recent years, there has been an increase in the number of children diagnosed with both Down Syndrome and Autism Spectrum Disorder (ASD). 

This dual diagnosis presents unique challenges for parents, requiring a deeper understanding of each condition. While Autism and Down Syndrome are both developmental disorders, they have distinct causes, symptoms, treatment approaches, and management strategies.

This article aims to clarify the differences and similarities between Autism and Down Syndrome, equipping parents with valuable insights and information.

Autism Spectrum Disorder (ASD)

Understanding Autism Spectrum Disorder

Autism Spectrum Disorder (ASD) is a complex developmental condition that affects social communication, behaviour patterns, and interests. It is a lifelong condition, with symptoms varying significantly between individuals. The diagnosis of ASD is typically made by a child psychiatrist or psychologist, often becoming noticeable when a child is between 2 and 3 years old. However, some signs may become more pronounced after the child starts school.

Symptoms for Autism Spectrum Disorder

Children with Autism Spectrum Disorder may exhibit a range of social communication deficits, including:

  • Limited interest in sharing experiences with others
  • Difficulty understanding and expressing emotions
  • Challenges with eye contact and forming friendships
  • Inflexible or robotic speech patterns
  • Difficulty grasping abstract concepts

Individuals with ASD may also engage in repetitive behaviours and exhibit restricted interests such as:

  • Resistance to change and difficulty coping with disruptions
  • Intense focus on specific topics
  • Hypersensitivity to sensory stimuli
  • Resistance to new experiences
  • Repetitive movements (stimming) like hand-flapping or rocking
  • Organising objects in a fixed manner

Diagnosis and Treatment of Autism Spectrum Disorder

Early diagnosis of Autism Spectrum Disorder allows for early intervention and access to necessary resources. While there is no cure for autism, various therapies and interventions can help individuals with ASD improve their social interaction and communication skills. 

Speech and language therapy, behaviour therapy, social skills training, special education, and parent management training are among the approaches commonly used to support individuals with ASD.

Down Syndrome

Understanding Down Syndrome

Down Syndrome, also known as trisomy 21, is a chromosomal disorder caused by the presence of an extra copy of chromosome 21. It is not hereditary but is more common in babies born to older mothers. Down Syndrome can be diagnosed prenatally through screening tests or postnatally through direct observation or genetic analysis.

Characteristics of Down Syndrome

Individuals with Down Syndrome may exhibit distinct physical characteristics, including:

  • Short neck
  • Upward slanting eyelids
  • Small head
  • Flattened face
  • Poor muscle tone
  • Short hands with a single crease across the palm
  • Small hands and feet with short fingers and toes
  • Brushfield’s spots

The severity of Down Syndrome varies among individuals, and it can be associated with lifelong learning disorders, intellectual disability, and developmental delays. Additionally, individuals with Down Syndrome may experience health problems such as heart defects.

Speech and Language Development in Down Syndrome

Children with Down Syndrome commonly experience speech and language delays. Speech therapy can play a crucial role in helping them develop communication skills. 

Parents are encouraged to seek speech and language therapy services for their children with Down Syndrome to support their language development and overall communication abilities.

Dual Diagnosis: Autism and Down Syndrome

When a child has Down Syndrome, diagnosing Autism Spectrum Disorder can be challenging. Parents must observe and monitor any behavioural changes in their child. Some behaviours that may indicate a dual diagnosis of Autism and Down Syndrome include:

In Children Younger Than 3 Years:

  • Repetitive motor behaviours
  • Episodic eye movements
  • Sudden and extreme refusal of specific foods
  • Atypical play with toys
  • Regression of spoken language, gestures, and signs
  • Impairment of receptive language
  • Fascination with or staring at moving lights, fingers, or ceiling fans

In Children Older Than 3 Years:

  • History of developmental regression
  • Atypical vocalisations
  • Unusual sensory responsiveness
  • Hyperactivity or hypoactivity
  • Short attention span
  • Resistance to changes in routine

Teenagers with a dual diagnosis may exhibit signs such as lack of social response, distant behaviour with family or friends, absence of interest in forming new relationships, anxiety, fascination or obsession with inanimate objects, and difficulty adjusting to new environments. 

It is important to note that some of these behaviours can be considered typical at certain stages of development. However, if pervasive and extreme, an evaluation for Autism Spectrum Disorder may be necessary.

Seeking Support and Resources

If you believe that your child may benefit from an evaluation for Autism Spectrum Disorder, it is essential to closely observe their behaviours and seek guidance from healthcare professionals experienced in diagnosing and treating children with both Down Syndrome and Autism. 

Additionally, building a strong support system, educating yourself about the conditions, and connecting with other parents facing similar challenges can be helpful.

Remember, a formal diagnosis can provide your child with access to appropriate educational programs and services, enhancing their quality of life. Should you require an autism diagnostic assessment for your child, you may reach out to the  Kaleidoscope Therapy team by filling out this form.  Stay informed, remain proactive, and advocate for your child’s unique needs.

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