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Autism MOB

Can inherited traits stay repressed and hide autism if it’s a new case in the child? 

Posted:    Author:  

Beatrice Holloway, MSc

   Reviewed by:  

Dr. Rebecca Fernandez, MBBS

In some cases, repressed inherited autism traits can indeed hide or mask the symptoms of autism, particularly when it manifests as a new autism case in a child. These recessive traits might not be immediately apparent because they can be hidden by the presence of other dominant traits in the family line. For example, a child might inherit certain autism related traits that don’t show up until later, making diagnosis trickier, especially if no previous family history of autism is evident. 

How Repressed Traits Affect New Cases 

When inherited traits are repressed, they may not fully express themselves until a triggering factor or additional genetic variation, such as a de novo mutation, occurs. This can make the autism traits more subtle in the early stages or even unrecognised until behavioural changes become more noticeable as the child grows. Sometimes, these traits might remain masked for a period, with other conditions or environmental factors playing a role in how the symptoms manifest. 

Delayed recognition:  

Symptoms such as social communication difficulties or repetitive behaviours might not appear until the child reaches a certain age. At this stage, CBT or behavioural therapies can help address these issues and provide support for managing challenges. 

Inheritance masking:  

Traits that are passed down but remain unexpressed can be triggered later, leading to a clearer autism diagnosis as the child’s development progresses. 

Visit providers like Autism Detect for personal consultations to better understand autism risk and how genetics may play a role in your family history. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to inherited traits and family history.

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Autism MOB
Beatrice Holloway, MSc
Written By Beatrice Holloway, MSc

Beatrice Holloway is a clinical psychologist with a Master’s in Clinical Psychology and a BS in Applied Psychology. She specialises in CBT, psychological testing, and applied behaviour therapy, working with children with autism spectrum disorder (ASD), developmental delays, and learning disabilities, as well as adults with bipolar disorder, schizophrenia, anxiety, OCD, and substance use disorders. Holloway creates personalised treatment plans to support emotional regulation, social skills, and academic progress in children, and delivers evidence-based therapy to improve mental health and well-being across all ages.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.
Dr. Rebecca Fernandez, MBBS
Reviewed By Dr. Rebecca Fernandez, MBBS

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy. 

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