What Is Regression in Autism Spectrum Disorder (ASD)?

Regression — the loss of previously acquired skills — is one of the most concerning experiences for families of children with autism. Approximately 25–30% of children with autism experience some form of regression, most commonly between 15–24 months of age.

Signs of Autistic Regression

✓Loss of words or phrases previously used
✓Decreased eye contact or social engagement
✓Loss of pointing or gesturing
✓Withdrawal from play or social interaction
✓Return of repetitive behaviors

Types of Regression

Language Regression (most common)

A child who was saying words or phrases stops using them.

Social Regression

A child who was engaging socially becomes withdrawn.

Skill Regression

Loss of self-care skills, play skills, or motor skills.

Mixed Regression

Loss across multiple areas simultaneously.

What Causes Regression?

The exact cause is not fully understood. Current research points to underlying neurological changes during critical developmental periods. Some researchers believe the skills were not yet fully consolidated, while others point to emerging neurological differences that become apparent during the toddler years.

Important: Regression is NOT caused by vaccines.

This has been thoroughly studied and disproven by multiple large-scale studies.

What to Do If You Notice Regression

✓Document what skills were present and when they changed
✓Contact your pediatrician immediately
✓Request a developmental evaluation
✓Begin early intervention services as soon as possible — early ABA therapy can help rebuild lost skills
✓Stay hopeful — many children who experience regression make significant gains with appropriate intervention

How ABA Therapy Helps

ABA therapy is specifically designed to systematically teach and reinforce skills. For children who have experienced regression, ABA can:

✓Rebuild communication through structured language programs
✓Restore social engagement through positive reinforcement
✓Develop new skills beyond the previous level
✓Provide data-driven progress tracking so families can see measurable improvement

Don't wait — early intervention matters

If you've noticed regression in your child, contact us today for a free consultation. Early ABA therapy produces the best outcomes.