Related Experiment Video
Updated: Jan 4, 2026

Author Spotlight: Collecting the Brain and Serum from the Same Mice Fetus to Study Brain Tumor Development
Published on: May 17, 2024
Prevalence of Autism and its Comorbidities and the Relationship with Maternal Psychopathology: A National
Mohammad Reza Mohammadi1, Nastaran Ahmadi2, Ali Khaleghi1
1Psychiatry and Psychology Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Insights
Autism affects 0.1% of Iranian children, with males more commonly diagnosed. Most autistic children have co-occurring conditions like intellectual disability and ADHD, and maternal mental health issues may increase autism risk.
Area of Science:
- Epidemiology
- Child and Adolescent Psychiatry
- Neurodevelopmental Disorders
Background:
- Limited data exists on autism prevalence and comorbidities in Iranian youth.
- A national population-based study was initiated to address this knowledge gap.
Purpose of the Study:
- To estimate the prevalence of autism spectrum disorder (ASD) in Iranian children and adolescents.
- To identify common comorbidities associated with ASD in this population.
- To explore potential links between maternal psychiatric disorders and ASD risk.
Main Methods:
- A large-scale, national, population-based study involving 31,000 children and adolescents aged 6-18.
- Utilized the Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Present and Lifetime version (K-SADS-PL) for diagnosis.
Main Results:
- Autism prevalence was found to be 0.1% (10 per 10,000) with a 2:1 male-to-female ratio.
- 86% of individuals with autism presented with at least one comorbid condition.
- The most frequent comorbidities included intellectual disability (70.3%), epilepsy (29.7%), enuresis (27%), and attention deficit and hyperactivity disorder (ADHD) (21.62%).
- Maternal personality disorders were associated with an increased risk of autism.
Conclusions:
- This study highlights significant prevalence rates of autism and its comorbidities among Iranian youth.
- A correlation was identified between certain maternal psychiatric disorders and the risk of developing autism.
Background:
There is no clear picture regarding the prevalence rates of autism and its comorbidities among Iranian children and adolescents. The present study aimed to estimate these rates as part of a large national population-based study on epidemiology of psychiatric disorders in Iranian children and adolescents.
Methods:
The total sample consisted of 31000 children and adolescents between 6 to 18 years of age. The Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Present and Life time version (K-SADS-PL) was used as the diagnostic tool.
Results:
The prevalence of autism in the total sample is equal to 0.1% (10 per 10000), with a 2:1 male-to-female ratio. In total, 86% of people with autism had at least one comorbid condition. Intellectual disability, epilepsy, enuresis and attention deficit and hyperactivity disorder (ADHD) with prevalence rates of 70.3%, 29.7%, 27% and 21.62%, respectively, were the most prevalent comorbid conditions in people with autism. Maternal personality disorders were also shown to be associated with increasing risk of autism.
Conclusion:
The present study shows high prevalence rates for autism and its comorbid conditions among Iranian children and adolescents. It also reveals that there is a relationship between some maternal psychiatric disorders and the risk of autism.
Related Concept Videos
Autism Spectrum Disorder
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
Diagnostic and Statistical Manual of Mental Disorders (DSM)
Attention-Deficit/Hyperactivity Disorder
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
Psychological and Sociocultural Causes of Schizophrenia
Modeling in Therapy
Participant Modeling
Participant modeling involves therapists demonstrating calm and effective behaviors in...
Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within...

