Assessment & Research

Rett syndrome: a review of current knowledge.

Van Acker (1991) · Journal of autism and developmental disorders 1991
★ The Verdict

Rett syndrome is a rare girl-only regression disorder that later studies split into communication, behavior, and genetic sub-types.

✓ Read this if BCBAs who may evaluate girls with sudden skill loss and hand stereotypies.
✗ Skip if Clinicians working solely with adult male offenders or typically developing children.

01Research in Context

01

What this study did

Bauman (1991) wrote a big-picture review. The paper pulled together every clinical clue known about Rett syndrome at the time.

No new data were collected. The goal was to give doctors and therapists a single snapshot of the disorder.

02

What they found

Rett syndrome almost always strikes girls who had looked typical for the first 6–18 months.

The hallmark is a steep loss of hand use, language, and social interest, followed by constant hand-wringing movements.

Seizures, scoliosis, and breathing irregularities ride along as the child ages.

03

How this fits with other research

Raslear et al. (1992) zoomed in one year later. They counted pre-linguistic behaviors in 120 girls and showed eye gaze is the main way these children “talk.”

Taylor et al. (1993) ran the first functional analyses on self-injury. They proved that different SIB forms can serve escape or automatic functions, so one behavior plan will not fit all.

Young et al. (2011) added genes to the story. They tracked health and service use by MECP2 mutation and showed that some DNA changes bring early decline then stability, while others do the reverse.

Together the later papers turn the 1991 sketch into a colored map: expect eye-gaze communication, test each SIB form separately, and check the mutation before you predict the road ahead.

04

Why it matters

You will rarely see Rett syndrome, but when you do, these details save time. Watch for loss of hand skills after normal infancy, use eye gaze as the primary communication channel, and assess each self-injury topography on its own. If genetic reports are available, match your service plan to the mutation’s expected ups and downs.

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→ Action — try this Monday

Screen any girl who lost hand use and words after one year—note if eye gaze remains her main communicator.

02At a glance

Intervention
not applicable
Design
narrative review
Population
other
Finding
not reported

03Original abstract

Rett syndrome was first described in 1966 by Andreas Rett. To date, this syndrome has been reported only to afflict females. The disorder is characterized by a progressive loss of cognitive and motor skills as well as the development of stereotypic hand movements, occurring after an apparently normal 6 to 18 months of development. Although Rett syndrome is thought to afflict as many as 10,000 girls in the United States, fewer than 1,200 have been identified thus far. A lack of awareness of this disorder is thought to play a critical role in the failure to differentially diagnose this syndrome. The present article presents a review of our current knowledge concerning this disorder. Information is provided related to the clinical manifestations, etiology, prevalence, pathogenesis, and treatment of the Rett syndrome.

Journal of autism and developmental disorders, 1991 · doi:10.1007/BF02206866