Regression in autism refers to the loss of previously acquired skills or a backtracking of developmental milestones. In young children, this may signify the onset of autism, while in older individuals, it can indicate autistic burnout. It is important to recognize that regression can affect both children and adults, and it often presents as a result of chronic stress due to masking and insufficient support systems.
Early Signs and Patterns of Regression in Toddlers
Regression in toddlers can be a concerning phenomenon for parents and caregivers. Identifying early signs and patterns associated with developmental milestones and onset age can help manage expectations and seek timely intervention.
Developmental milestones are key indicators of a child’s growth and progress. In autism, regression refers to the loss of previously acquired skills. Recent research indicates that this is not an all-or-nothing phenomenon. Many children may acquire and subsequently lose skills within their first two years of life.
That said, the age at which regression occurs can vary significantly among children with autism. A recent meta-analysis of 28 studies found the average age of regression to be slightly older than 21 months.
Most studies report a range of regression occurring between 15 to 30 months of age. Accordingly, developmental regression is typically seen between ages 18–24 months.
Approximately one-third of children with autism experience a loss of established skills after a period of typical development. Meanwhile, for those experiencing late regression, the mean onset can occur around age 13 years.
The timing of regression is critical, with the majority occurring within the second and third years of life. Understanding these age ranges can assist parents and caregivers in recognizing when to seek further evaluations and possible interventions.
By being aware of both developmental milestones and onset age, parents and caregivers can take proactive steps if regression signs are observed, thereby fostering a supportive environment for the child.
4 Types of Regression
Several types of regression can be observed among individuals with autism. Understanding these types can help parents and caregivers identify changes in behavior and developmental patterns.
These are as follows:
- Language Loss: The most frequently reported aspect of regression by parents. Children may lose the ability to communicate verbally or understand language.
- Social Skills Loss: A decline in social interactions, such as difficulty in making eye contact or engaging in play with peers.
- Motor Skills Loss: A noticeable reduction in fine and gross motor skills, which can affect activities like writing or self-care tasks.
- Adaptive Skills Loss: A decrease in basic self-care skills, including self-feeding, toileting, and dressing.
Most children experiencing regression in autism typically exhibited early differences in social, language, and attachment behaviors. The earlier development of these skills, followed by regression, does not guarantee future recovery or improved developmental outcomes.
The onset of regression is generally observed within the second and third years of life, with a mean occurrence around 20 months. Some children may exhibit skill loss even after the second year, reinforcing the need for vigilant monitoring of developmental progress in children with autism.
As developmental progress is closely tied to early intervention, it’s essential to consider effective therapies for continued growth. One such approach is Applied Behavior Analysis (ABA) therapy, which has proven beneficial for teens as well. To explore how ABA therapy can support teens, especially as they navigate challenges in adolescence, take a look at our article, “A Look at the Effectiveness of ABA Therapy for Teens.”

2 Factors Influencing Regression
Understanding the factors that contribute to regression in toddlers with autism is crucial for parents and caregivers. Two significant influences are cognitive deficiencies and autistic symptomatology.
Cognitive Deficiencies
Children experiencing regression in autism, specifically those with language regression, often exhibit higher levels of cognitive deficiencies. Research indicates that these children frequently display greater challenges in social communication compared to their peers who do not experience regression.
The presence of these deficiencies can hinder their ability to retain or regain previously acquired skills.
Autistic Symptomatology
Autistic regression is characterized by a loss of previously developed skills or a reversal in developmental milestones. In younger children, this regression can signify the onset of autism.
In contrast, older children and adults may experience regression as a manifestation of autistic burnout, where the cumulative stress of managing their condition becomes overwhelming.
Monitoring these factors is essential for recognizing and addressing regression in toddlers. By understanding cognitive deficiencies and the implications of autistic symptomatology, parents and caregivers can better support their children during challenging phases of development.
How to Manage Regression in Children
Understanding how to manage regression in children with autism is crucial for parents and caregivers. The approaches can vary based on individual circumstances, but there are general prognostic insights and intervention strategies that can be beneficial.
The prognosis for children with regression in autism can be challenging to predict. Approximately one-third of young children diagnosed with autism lose some skills during the preschool years, typically affecting speech but sometimes involving nonverbal communication, social skills, or play abilities. Children exhibiting regression often had previously shown subtle developmental differences.
The timing of regression generally occurs within the second and third years of life, with a mean age of around 20 months. Early differences in language, social interaction, and attachment behaviors are commonly observed in children who regress.
However, these early indicators do not necessarily predict later recovery of skills or improved developmental outcomes.
With that in mind, effective intervention strategies are essential for managing regression in children with autism. The focus should often be on enhancing communication, social skills, and daily living abilities.
Here are some common approaches:

The diverse range of strategies underscores the need for tailored approaches, as each child’s needs and abilities can significantly differ when dealing with regression in toddlers. Effectively managing these challenges can facilitate better outcomes for children with autism. To explore how these tailored strategies can make a difference, check out our article Understanding Attention Deficit in Children with Autism. It dives into the specifics of managing attention-related challenges and offers insights on how targeted approaches can help improve focus and behavior in children with autism.
Conclusion
Regression in autism is a complex and deeply personal experience that can affect children and adults alike. Whether it’s a toddler suddenly losing language or an older child showing signs of burnout, recognizing the early signs and understanding the types and causes of regression is key.
While the journey can be unpredictable, early intervention and consistent support through therapies, education, and family involvement can make a meaningful difference. At Golden Care Therapy, we provide high-quality ABA therapy in New York, New Jersey, Indiana, Georgia, and Florida.
If you’re looking for a trusted partner in your child’s development, we’re here to walk alongside you every step of the way. Contact us today to learn how we can support your family.
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