Pain experience and expression in Rett syndrome: Subjective and objective measurement approaches.
Most girls with Rett syndrome live with recurring pain—use both parent report and live observation of face, breath, and muscle tone to catch it early.
01Research in Context
What this study did
The team watched girls with Rett syndrome during regular doctor visits.
They also asked parents about daily pain at home.
The goal was to list clear pain signals in this non-verbal group.
What they found
Almost every girl showed pain often.
Common signs were face grimaces, breath holding, and stiff arms.
Parents and direct observation together gave the fullest picture.
How this fits with other research
Moore (2015) warns that parent reports alone can mislead. In autism, moms and dads often say their child feels less pain, yet lab tests show normal or even higher pain.
Schaaf et al. (2015) agree parent talk is useful, but only when paired with watching real-time reactions.
Matson et al. (2008) add that facial activity is the cue most observers trust, matching the grimaces C et al. recorded.
Looking forward, Sabater-Gárriz et al. (2025) are building an AI phone app that reads facial pain cues in non-verbal cerebral palsy—an idea that grows straight out of this Rett work.
Why it matters
You now have a short checklist of Rett pain behaviors you can spot in clinic or school. Pair a quick parent interview with a 5-minute watch during position changes or therapy. If you see breath holding or facial grimace, treat it as pain until proven otherwise. This simple habit can cut missed pain and guide timely medical referral.
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02At a glance
03Original abstract
Rett syndrome (RTT) is associated with myriad debilitating health issues and significant motor and communicative impairments. Because of the former there is concern about the possibility of recurrent and chronic pain but because of the latter it remains difficult to determine what pain 'looks like' in RTT. This study investigated pain experience and expression using multiple complementary subjective and objective approaches among a clinical RTT sample. Following informed consent, 18 participants (all female) with RTT (mean age= 12.8 years, SD= 6.32) were characterized in terms of pain experience and interference, typical pain expression, and elicited pain behavior during a passive range of motion-like examination procedure. Parents completed the Dalhousie Pain Interview (DPI; pain type, frequency, duration, intensity), the Brief Pain Inventory (BPI; pain interference), and the Non-Communicating Children's Pain Checklist - Revised (NCCPC-R; typical pain expression). A Pain Examination Procedure (PEP) was conducted and scored using the Pain and Discomfort Scale (PADS). The majority of the sample (89%) were reported to experience pain in the previous week which presented as gastrointestinal (n=8), musculoskeletal (n=5), and seizure related pain (n=5) that was intense (scored 0-10; M= 5.67, SD= 3.09) and long in duration (M= 25.22 hours, SD= 53.52). Numerous pain-expressive behaviors were inventoried (e.g., vocal, facial, mood/interaction changes) when parents reported their child's typical pain behaviors and based on independent direct observation during a reliably coded pain exam. This study provides subjective and objective evidence that individuals with RTT experience recurring and chronic pain for which pain expression appears intact.
Journal of developmental and physical disabilities, 2015 · doi:10.1007/s10882-015-9427-3