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.
Abstract

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