Rett Syndrome
How Rett Syndrome Is Assessed in Children Under 7
Rett Syndrome in children under 7 is assessed through developmental history, structured clinical observation of hand use, communication and movement, and genetic testing for MECP2 changes — coordinated by a medical team. A clinical AbilityScore and any diagnosis are formed only at a Pinnacle centre under clinician care.
When a little girl's early progress changes course, careful assessment turns worry into a clear path forward.
In short
Rett Syndrome is assessed through careful clinical observation of your child's developmental history, a structured developmental evaluation, and — where indicated — genetic testing for changes in the MECP2 gene, arranged by a paediatrician or developmental specialist. In children under 7, clinicians look closely for a recognised pattern: a period of typical early development followed by a slowing or loss of skills, especially purposeful hand use and spoken communication. Assessment is a team effort, never a single test or a label given in a moment.How assessment works at this age
A clinician builds a picture over time, gathering:- Developmental history — when skills appeared, and whether any were lost.
- Hand-use patterns — loss of purposeful grasp, and repetitive hand movements such as wringing, washing or mouthing.
- Communication and social engagement — changes in babble, words, eye contact and connection.
- Movement and gait — walking pattern, tone and coordination.
- Growth measures — including head-circumference trends over time.
Because Rett Syndrome is recognised in ICD-11 (LD90.0), a confirmed diagnosis combines this clinical picture with genetic testing, coordinated by your medical team. A developmental profile then maps your daughter's current strengths and support needs across communication, motor and self-care, so therapy can begin where it helps most.
The Pinnacle way
A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care — never from an online form. We then turn that profile into a steady, family-paced plan. Learn more about Rett Syndrome, explore occupational therapy for hand use and daily skills, and see how the AbilityScore works.Trusted sources
WHO ICD-11 (LD90.0); American Academy of Pediatrics developmental guidance; WHO healthy-development frameworks.Next step — Concerned about a change in your daughter's skills? Book an assessment with a Pinnacle clinician.
This is general information, not a diagnosis — a clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre under qualified clinician care.
What to watch
A period of typical early development followed by slowing or loss of skills — especially loss of purposeful hand use, repetitive hand movements (wringing, washing, mouthing), reduced babble or words, and changes in walking or head-circumference growth.
Try this at home
Keep a simple month-by-month note of skills your child gains or seems to lose — short video clips of hand use and play are especially helpful for your clinician to review.
Trusted sources
Developed by SETU Consortium · Pinnacle Blooms Network · Last reviewed 2026-06-10 · reviewed every 365 days
This is general information, not a diagnosis. A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care.
Frequently asked
Is there a single test for Rett Syndrome?
No. Assessment combines developmental history, structured clinical observation of hand use, communication and movement, and — where indicated — genetic testing for MECP2 changes, coordinated by your medical team.
At what age can Rett Syndrome usually be recognised?
The pattern often becomes noticeable between about 6 and 18 months, when early development slows or skills such as purposeful hand use and babble are lost. Any regression at any age should prompt a prompt developmental and medical review.
Will my daughter be diagnosed at the first visit?
Not usually. A diagnosis is built carefully over observation and, where needed, genetic testing. A clinical AbilityScore and any diagnosis are formed only at a Pinnacle centre under qualified clinician care.