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Understanding the Reasons for Autism

know the reasons for autism, possible causes, how it affects the daily life and how to manage the autism. Learn when to seek a doctor and more.

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Written by Dr. Siri Nallapu

Reviewed by Dr. Vasanthasree Nair MBBS

Last updated on 13th Jan, 2026

autism

Introduction

Autism, or Autism Spectrum Disorder (ASD), is a developmental condition that affects how a person communicates, interacts, and behaves. While the exact causes of autism are still being researched, scientists believe it results from a combination of genetic and environmental factors. Understanding these reasons can help families, caregivers, and individuals with autism navigate the condition with greater awareness and support.

What Is Autism?

Autism is a spectrum disorder, meaning it affects people differently and to varying degrees. Some individuals may have mild challenges, while others may require significant support in daily life. Common characteristics of autism include:

  • Social communication difficulties – Trouble understanding social cues, making eye contact, or engaging in conversations.
  • Repetitive behaviors – Such as hand-flapping, rocking, or strict adherence to routines.
  • Sensory sensitivities – Over- or under-reacting to sounds, lights, textures, or smells.

Consult Neurologist for Personalised Advice

Dr Rajesh Venkat Indala, Neurologist

Dr Rajesh Venkat Indala

Neurologist

10 Years • DNB, DM FAAN

Chinagadila

Apollo Hospitals Health City Unit, Chinagadila

recommendation

98%

(175+ Patients)

600

Dr. Aditendraditya Singh Bhati, Neurosurgeon

Dr. Aditendraditya Singh Bhati

Neurosurgeon

21 Years • MBBS(2004), DNB Neurosurgery(2014); MNAMS; Fellow Skull Base Endoscopy (Italy), Fellow Extended Skull Base ( Weill Cornell, USA), Fellow ZAP-X Radiosurgery. Member of American Association of Neurological Surgeons

Delhi

Apollo Hospitals Indraprastha, Delhi

recommendation

84%

(100+ Patients)

1200

1500

Possible Causes of Autism

While no single cause has been identified, research suggests that autism develops due to a combination of factors:

1. Genetic Factors

  • Many studies indicate that genes play a significant role in autism. If a family member has autism, there is a higher chance that another family member may also have it. Certain genetic mutations and syndromes (such as Fragile X syndrome) are linked to ASD.

2. Environmental Influences

Environmental factors during pregnancy or early childhood may contribute to autism. These include:

  • Prenatal exposure – Infections, certain medications, or exposure to toxins.
  • Birth complications – Premature birth, low birth weight, or oxygen deprivation.
  • Parental age – Older parents (especially fathers) may have a slightly higher risk of having a child with autism.

3. Brain Development Differences

  • Brain scans show that some individuals with autism have differences in brain structure and connectivity.
  • These differences may affect how the brain processes information and responds to the environment.

4. No Link to Vaccines

  • Extensive research has confirmed that vaccines do not cause autism. This myth originated from a now-debunked study, and multiple large-scale studies have found no connection between vaccinations and ASD.

How Autism Affects Health and Daily Life?

Autism impacts each person differently. Some individuals may excel in certain areas (like math or art) while struggling with social interactions. Others may face challenges with speech, sensory processing, or emotional regulation. Common health-related concerns include:

  • Sleep difficulties – Many children and adults with autism have trouble falling or staying asleep.
  • Digestive issues – Some experience gastrointestinal problems like constipation or food sensitivities.
  • Anxiety and depression – Social challenges and sensory overload can contribute to mental health concerns.

Managing Autism: Tips for Support

While there is no "cure" for autism, early intervention and supportive strategies can significantly improve quality of life. Here are some helpful approaches:

1. Early Intervention

  • Speech therapy, occupational therapy, and behavioral interventions (like ABA therapy) can help children develop communication and social skills.

2. Structured Routine

  • Many individuals with autism thrive on predictability. A consistent daily schedule can reduce anxiety.

3. Sensory-Friendly Environment

  • If bright lights or loud noises are overwhelming, creating a calm space with dim lighting or noise-canceling headphones can help.

4. Healthy Diet and Exercise

  • Some children with autism have food sensitivities. A balanced diet and regular physical activity can improve mood and overall health.

5. Emotional Support

  • Encouraging self-expression through art, music, or writing can be therapeutic. Counseling can also help with anxiety or emotional challenges.

When to Seek Professional Help?

If you suspect your child may have autism, look for early signs such as:

  • Delayed speech or lack of response to their name.
  • Limited eye contact or social engagement.
  • Repetitive movements or intense focus on specific interests.

Consulting a pediatrician or developmental specialist can lead to early diagnosis and support.

Final Thoughts

Autism is a complex condition with no single cause, but understanding the possible factors can help families provide better care. With the right support, individuals with autism can lead fulfilling lives, embracing their unique strengths while receiving help for their challenges.

Consult Neurologist for Personalised Advice

Dr Rajesh Venkat Indala, Neurologist

Dr Rajesh Venkat Indala

Neurologist

10 Years • DNB, DM FAAN

Chinagadila

Apollo Hospitals Health City Unit, Chinagadila

recommendation

98%

(175+ Patients)

600

Dr. Aditendraditya Singh Bhati, Neurosurgeon

Dr. Aditendraditya Singh Bhati

Neurosurgeon

21 Years • MBBS(2004), DNB Neurosurgery(2014); MNAMS; Fellow Skull Base Endoscopy (Italy), Fellow Extended Skull Base ( Weill Cornell, USA), Fellow ZAP-X Radiosurgery. Member of American Association of Neurological Surgeons

Delhi

Apollo Hospitals Indraprastha, Delhi

recommendation

84%

(100+ Patients)

1200

1500

Consult Neurologist for Personalised Advice

Dr Debnath Dwaipayan, Neurosurgeon

Dr Debnath Dwaipayan

Neurosurgeon

9 Years • MBBS, MS(Gen. Surgery), DrNB (Neurosurgery)

Delhi

Apollo Hospitals Indraprastha, Delhi

1000

2000

Dr Rajesh Venkat Indala, Neurologist

Dr Rajesh Venkat Indala

Neurologist

10 Years • DNB, DM FAAN

Chinagadila

Apollo Hospitals Health City Unit, Chinagadila

recommendation

98%

(175+ Patients)

600

Dr. Aditendraditya Singh Bhati, Neurosurgeon

Dr. Aditendraditya Singh Bhati

Neurosurgeon

21 Years • MBBS(2004), DNB Neurosurgery(2014); MNAMS; Fellow Skull Base Endoscopy (Italy), Fellow Extended Skull Base ( Weill Cornell, USA), Fellow ZAP-X Radiosurgery. Member of American Association of Neurological Surgeons

Delhi

Apollo Hospitals Indraprastha, Delhi

recommendation

84%

(100+ Patients)

1200

1500

Dr. Rashmi Devaraj, Neurologist

Dr. Rashmi Devaraj

Neurologist

11 Years • MBBS, MD PEDIATRICS, DM NEUROLOGY

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

1100

Dr. Ganeshgouda Majigoudra, Neurologist

Dr. Ganeshgouda Majigoudra

Neurologist

10 Years • MBBS, MD ( GENERAL MEDICINE) DM (NEUROLOGY)

Bengaluru

Apollo Clinic, JP nagar, Bengaluru

1000

Consult Neurologist for Personalised Advice

Dr Debnath Dwaipayan, Neurosurgeon

Dr Debnath Dwaipayan

Neurosurgeon

9 Years • MBBS, MS(Gen. Surgery), DrNB (Neurosurgery)

Delhi

Apollo Hospitals Indraprastha, Delhi

1000

2000

Dr Rajesh Venkat Indala, Neurologist

Dr Rajesh Venkat Indala

Neurologist

10 Years • DNB, DM FAAN

Chinagadila

Apollo Hospitals Health City Unit, Chinagadila

recommendation

98%

(175+ Patients)

600

Dr. Aditendraditya Singh Bhati, Neurosurgeon

Dr. Aditendraditya Singh Bhati

Neurosurgeon

21 Years • MBBS(2004), DNB Neurosurgery(2014); MNAMS; Fellow Skull Base Endoscopy (Italy), Fellow Extended Skull Base ( Weill Cornell, USA), Fellow ZAP-X Radiosurgery. Member of American Association of Neurological Surgeons

Delhi

Apollo Hospitals Indraprastha, Delhi

recommendation

84%

(100+ Patients)

1200

1500

Dr. Rashmi Devaraj, Neurologist

Dr. Rashmi Devaraj

Neurologist

11 Years • MBBS, MD PEDIATRICS, DM NEUROLOGY

Bengaluru

Apollo Medical Center, Marathahalli, Bengaluru

1100

Dr. Ganeshgouda Majigoudra, Neurologist

Dr. Ganeshgouda Majigoudra

Neurologist

10 Years • MBBS, MD ( GENERAL MEDICINE) DM (NEUROLOGY)

Bengaluru

Apollo Clinic, JP nagar, Bengaluru

1000

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