What level of autism does my child have?
A common question we get asked, is “What level of autism does my child have?”.
The DSM 5 (Diagnostic and Statistical Manual of Mental Disorders) is the handbook used by health care professionals across much of the world as the authoritative guide to the diagnosis of mental health issues and neurodevelopmental conditions. The DSM contains descriptions, symptoms and other criteria for diagnosing these conditions, ensuring a standardised approach to diagnosis.
The fifth edition of the DSM was published in 2013. In the previous version of the manual (DSM IV), ‘autism’ or actually ‘autistic disorder’ was one of the conditions falling under the category of ‘Pervasive Developmental Disorders’, alongside Asperger’s syndrome, pervasive developmental disorder, not otherwise specified (PDD-NOS) and childhood disintegrative disorder (CDD).
The fifth edition, recognised the wide ranging impact autism can have on different people and replaced the above conditions with the umbrella term of ‘autism spectrum disorder’.
With the removal of the specific diagnosis of Asperger’s syndrome from the diagnostic manual, the term ‘high functioning autism’ started to be used to describe certain autistic people.
The term is not a medical diagnosis and is very misleading. It is often used to describe people who have average or above average levels of language and average or above average cognitive ability (that is, do not have an associated learning difficulty).
It has always been recognised that autism is separate from intellectual ability.
Research has shown that there are many factors that contribute to an individual’s actual level of functioning, including:
- Communication
- Social interaction
- Motor skills
- Sensory processing
- Information processing
Intellectual ability alone is therefore an extremely unhelpful way to evaluate someone’s level of functioning. The term ‘high functioning autism’ is inaccurate and misleading and therefore should not be used.
Rather than level of functioning, the DSM-5 uses 3 ‘severity levels’ to describe the support an individual requires, there are different descriptors for social communication and restricted, repetitive behaviours.
Social Communication ‘Severity Levels’
Level 1 – Requiring Support
Without supports in place, deficits in social communication cause noticeable impairments. Difficulties experienced by individuals requiring this level of support may include:
- Difficulty initiating social interactions
- Struggles with responses to the social approaches of others
- Decreased interest in social interaction
- Difficulties making friendships
- Struggling to maintain to and fro conversation
Level 2 – Requiring Substantial Support
Marked deficits in verbal and non-verbal communication skills.
Difficulties experienced by individuals requiring this level of support may include:
- Unable to use complex language
- Limited initiation of social interaction
- Unusual response to other’s social approaches
- Unusual non-verbal communication
- Limited range of conversational topics
Level 3 Requiring Very Substantial Support
Severe deficits in verbal and non-verbal social communication skills cause severe impairments in functioning.
Difficulties experienced by individuals requiring this level of support may include:
- No or limited level of speech
- Rarely shows interest in initiating social interactions
- Minimal social responses
- Most communication and interaction is related to meeting needs
Restricted, Repetitive Behaviours ‘Severity Levels’
Level 1 – Requiring Support
Inflexibility of behaviour causes significant interference with functioning in one or more contexts.
Difficulties experienced by individuals requiring this level of support may include:
- Difficulties with changes, preference for same routine but not distressed by this
- Special interests that do not impact on other areas of life
- Difficulties planning and organising
- Repetitive behaviours that are not particularly obvious to others
Level 2 – Requiring Substantial Support
Inflexibility of behaviour, difficulty coping with change or other restricted / repetitive behaviour appear frequently enough to be obvious to the casual observer and interfere with functioning in a variety of contexts.
Difficulties experienced by individuals requiring this level of support may include:
- Distress in response to changes in routine
- Special interests impact on other areas of life
- Frequent repetitive motor movements that moderately impact functioning
- Moderate difficulties with unfamiliar people or places
Level 3 – Requiring Very Substantial Support
Inflexibility of behaviour, extreme difficulty coping with change or other restricted / repetitive behaviour markedly interfere with functioning in all spheres.
Difficulties experienced by individuals requiring this level of support may include:
- Extreme distress in response to changes
- Frequent repetitive motor movements that significantly impact functioning
- Repetitive behaviours cause self-injury
- Unable to cope with unfamiliar people or places
Predicting Future Severity Levels in Children
As children are developing, it can be difficult to predict how their autistic differences may affect them in the future. Autistic children often follow an unusual developmental trajectory. Some children experience regression in development, where as other children appear to plateau and then experience ‘spikes’ in development. Some children follow a very delayed developmental trajectory, such as Professor Jason Arday who was unable to speak until he was 11 years old and could not read or write until he was 18.
Whilst we know that the presence or absence of associated learning (intellectual) disability and language impairment can act as predictors for later life, there is no accurate way of predicting how a child will be impacted in the future.
We do know that outcomes can be improved by early diagnosis and assessment because this helps the child and others around them understand why the child is different from their peers, and enables the correct support from health, education, social care and voluntary organisations to be accessed.
Categorised in: Child Autism, Education