Regression in autism

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Illustration: a child stands in the center of a crowd, looking confused.

Rethinking regression in autism

The loss of abilities that besets some toddlers with autism is probably less sudden and more common than anyone thought.

By David Dobbs
2 August 2017 | 18 min read
Spectrum stories podcast logo.

Spectrum Stories: Rewriting the story of regression in autism

One day, you have a toddler who’s vocal, who looks you in the eye, who literally reaches out to you. And then everything changes.

By Jacob Brogan
2 August 2017 | 1 min read
Photo: Bernardo Pace and his daughter Gina stand together, looking at each other and embracing.

The most terrifying childhood condition you’ve never heard of

Childhood disintegrative disorder, a rare and severe condition, rapidly melts away a child's abilities. A new theory proposes that this little-known condition turns back the developmental clock.

By David Dobbs
6 July 2016 | 24 min read

From the archives

Regression marks one in five autism cases, large study finds

The first large population-based analysis of the prevalence of regression in autism reveals that it occurs in 20 percent of children with autism.

By Sarah DeWeerdt
17 August 2016 | 4 min read

Rare form of autism shows unique pattern of regression

More than 40 percent of children with Phelan-McDermid syndrome lose skills they once had, beginning, on average, at age 6.

By Carrie Arnold
24 May 2017 | 3 min read
Spectrum from The Transmitter.

Regression in Rett syndrome may inform autism

Studying regression in Rett syndrome may help us understand the phenomenon in autism, as it occurs at the same time in both disorders and includes many of the same features, says Jeffrey Neul.  

By Jeffrey Neul
18 June 2013 | 7 min read

Rare form of regression is distinct from most autism

A rare condition marked by a sudden and profound loss of skills is biologically distinct from other forms of autism.

By Bahar Gholipour
1 June 2017 | 4 min read
Spectrum from The Transmitter.

Genetics: Gene linked to adult regression implicated in Rett

A teenage girl with Rett syndrome has a mutation in WFR45, a gene that is mutated in people who abruptly lose motor and mental skills in adulthood, according to a study published 13 March in the Journal of Human Genetics.

By Kate Yandell
3 June 2014 | 3 min read
Spectrum from The Transmitter.

Skill lag and loss common in children with autism

Children with autism develop interactive skills late and many lose at least one skill by 3 years of age, says a study published in November.

By Laura Geggel
7 January 2014 | 3 min read
Spectrum from The Transmitter.

Adult onset

A growing number of reports of adult-onset symptoms in Phelan-McDermid syndrome underline the need to follow people with the disorder throughout their lives, says Katy Phelan.

By Katy Phelan
5 February 2013 | 3 min read
Spectrum from The Transmitter.

In defense of childhood disintegrative disorder

Childhood disintegrative disorder represents a distinct entity within the autism spectrum and it should remain a separate diagnostic category, says Kevin Pelphrey.

By Kevin Pelphrey, Alexander Westphal
3 April 2012 | 8 min read

Explore more from The Transmitter

Research image of lesion network mapping.

‘Overdue’ debate unfurls over neuroimaging method

After a January paper questioned the validity of an approach called lesion network mapping, its users are pressure testing their results.

By Angie Voyles Askham
17 April 2026 | 8 min read
Research image of zebrafish brain activity.

Nearly 400 compounds affect behaviors tied to autism-linked genes in zebrafish

Estropipate, paclitaxel and levocarnitine altered behaviors tied to SCN2A and DYRK1A variants specifically, a new open-source platform revealed.

By Charles Q. Choi
16 April 2026 | 4 min read
NINDS building.

What neuroscientists want from a new NINDS director

The search is underway for the next director of the U.S. National Institute of Neurological Disorders and Stroke, who will face a range of challenges, neuroscientists say, but will also have an “immense opportunity to do good things.”

By Helena Kudiabor
15 April 2026 | 4 min read