Rett Syndrome: Signs a Nurse Should Watch For in a Young Child

Rett syndrome often unfolds after a period of seemingly typical early development — a nurse's careful eye can be the first to notice the change.

In short

Rett syndrome is a rare, genetically-based neurodevelopmental condition (most often linked to MECP2 variants) seen predominantly in girls. The hallmark a nurse should watch for is a regression or plateau — a child who develops typically for the first 6–18 months, then loses purposeful hand use and acquired speech, and develops repetitive midline hand movements (wringing, washing, mouthing or clapping). Slowing of head growth (acquired microcephaly), gait and coordination difficulties, and breathing irregularities while awake are further red flags. These observations warrant prompt paediatric and genetic referral — not therapy-first management.

Signs to watch for

• Developmental regression or stagnation — loss of previously acquired skills, especially purposeful hand function and any babble or words, typically between 6 and 18 months.
• Stereotypic midline hand movements — near-constant hand wringing, washing, squeezing, clapping or mouthing; loss of the ability to grasp or use objects deliberately.
• Deceleration of head growth — a falling head-circumference percentile (acquired microcephaly) on serial measurement.
• Gait and motor signs — unsteady, wide-based or toe walking, apraxia, truncal ataxia, or reduced mobility.
• Breathing irregularities (awake) — episodes of hyperventilation, breath-holding or air-swallowing during wakefulness, settling in sleep.
• Communication and social change — reduced eye contact early on, though intense, communicative eye gaze often re-emerges; loss of spoken language.
• Associated features — feeding and swallowing difficulty, bruxism, constipation, scoliosis, and seizures may develop over time.

When to refer

Any child showing developmental regression — particularly loss of hand skills with new stereotyped hand movements and decelerating head growth — needs prompt referral to paediatrics and clinical genetics. Because seizures and breathing and cardiac (QT) concerns can feature, this is a medical-priority pathway, with developmental therapy as essential supportive care alongside, not instead of, medical evaluation.

The Pinnacle way

AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from an app, a checklist or an online form. Where a medical diagnosis of Rett syndrome is confirmed, Pinnacle works alongside the treating paediatric and genetics team to support hand function, communication, mobility and daily living through structured, evidence-informed therapy. Explore our developmental support overview, how our occupational therapy builds adaptive and motor skills, and how the AbilityScore® is calculated.

Trusted sources

WHO ICD-11 classification of Rett syndrome under disorders of neurodevelopment; American Academy of Pediatrics (HealthyChildren.org) guidance on developmental surveillance and regression; ASHA resources on communication support in complex neurodevelopmental conditions.

Next step — Suspect regression in a child on your ward or clinic? Ensure prompt paediatric and genetic referral, then arrange a developmental assessment with a Pinnacle clinician.

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.