The Presentation of Depression in Depressed Autistic Individuals:
A Systematic Review
This page provides a summary.
The full paper includes the search strategy, included studies, and full synthesis.
Depression is reported more frequently in autistic people than in the general population, but identifying and assessing depressive symptoms can be complicated by overlap with autistic characteristics and limitations in standard depression measures. This systematic review synthesised how depressive symptoms have been described in autistic people, examined how reported presentations align with DSM-5-TR symptom presentations, and identified additional indicators commonly described in the literature.
Why was this review needed
Although research has suggested that depression in autistic people may not always present in expected ways, it remained unclear how depressive symptoms had been described across the literature. In particular, it was not known whether reported presentations align with standard diagnostic symptom presentations, whether core depressive symptoms may take a different form, or whether additional indicators are commonly described. This question is especially important because standard depression measures may not adequately capture autistic presentations of depressive symptoms, and evidence supporting their use in autistic populations remains limited.
What we did
We reviewed published studies describing depression in autistic people and synthesised how depressive presentations were reported across study designs and sources of information, including self-report and informant observation.
What the review found
Limited symptom-level detail across the literature
Many studies identified depressive symptoms, but provided limited detail about how those symptoms were experienced, expressed, or recognised at the symptom level.
For example, a study might report depressed mood or anhedonia without clarifying what that looked like in autistic participants.
This limits understanding of whether core depressive symptoms present in similar or different ways in autistic people and makes it harder to determine what should be assessed in practice.
Differences between self-report and informant report
Autistic adults without intellectual disability more often described internal experiences associated with depression, such as low mood, worthlessness, fatigue, anhedonia, suicidal ideation, and concentration difficulties.
Informant reports, often describing autistic people with intellectual disability, focused more on observable changes such as facial expression, activity level, sleep, and appetite.
None of the included studies directly compared self-reported and informant-reported presentations, despite these differences in reporting focus.
Overlap and attribution challenges
Depressive symptoms were often difficult to differentiate from autism-related characteristics
Diagnostic overshadowing could occur when depressive symptoms were attributed to autism rather than recognised as a co-occurring depressive disorder.
These challenges appeared particularly relevant where communication differences and intellectual disability were present.
Indicators beyond DSM-5-TR symptoms
In addition to the nine DSM-5-TR symptoms, 91.66% of reviewed articles reported at least one additional presentation concurrent with depression.
In the review, these were described as other indicators of depression.
Irritability
Irritability was reported alongside depression across age groups and intellectual ability profiles.
Irritability warrants reconsideration of how it is conceptualised in depression assessment.
Evidence on irritability and suicidality in autistic people remains limited.
What this may mean for practice
Autism-informed depression assessment needs to consider symptom overlap and diagnostic overshadowing in both directions.
Autism-related characteristics may be misinterpreted as depression.
Depression-related change may also be misattributed to autism.
Careful attention to change from the person’s usual baseline, supported by internal report and, where relevant, observable behaviour, may improve recognition and reduce misclassification.
Method considerations
Clinical interviews tended to yield more detailed descriptions than standardised questionnaires.
Interviews may provide greater depth, but can introduce interviewer bias and rely on subjective interpretation.
Questionnaires may reduce interviewer-related variability, but can miss nuance and variation in complex emotional states.