Chapter 05

What can help now

A practical checklist: sleep treatment, safety planning, therapies, surveillance, and medication guardrails.

The useful answer is not one protocol. SMS care is usually built from several levers at the same time: circadian sleep treatment, overnight safety, behavior support, developmental therapies, school accommodations, and routine screening for treatable medical problems.

This week, make it concrete

• Start one shared sleep-and-behavior log. Bring the log to appointments so the discussion is about patterns, not memory.
• Make the unsafe hours safer while treatment is being worked out: bedroom setup, door safety, kitchen access, and an escalation plan for nights that become dangerous.
• Ask the clinician to separate the SMS circadian problem from other treatable disruptors such as snoring or apnea, reflux, constipation, pain, infection, seizures, or medication side effects.
• Use the PRISMS checklist as the appointment agenda so hearing, vision, growth, thyroid, lipids, scoliosis, seizures, and family support are not forgotten.

Start with a sleep appointment that has data

Before a sleep or developmental appointment, keep two weeks of notes: bedtime, sleep onset, night wakings, early waking, naps or daytime sleepiness, overnight wandering or food seeking, self-injury, and any medication changes. GeneReviews specifically notes that sleep diaries or actigraphy can help document the sleep-wake schedule.

Behavior is also medical

A sudden change in behavior should trigger a search for pain, illness, poor sleep, constipation, reflux, dental pain, ear infection, urinary infection, seizures, or a medication side effect before it is treated as 'just behavior'.

• Ask for a comprehensive behavior support plan at home and school, built around structure, routine, known triggers, and safe responses to escalation.
• Ask whether developmental pediatrics, psychology, psychiatry, or a board-certified behavior analyst should be involved when aggression, self-injury, anxiety, ADHD-like symptoms, or destructive behavior are prominent.
• If medication is tried for attention, anxiety, mood, aggression, or sleep, track sleep and behavior for several weeks. GeneReviews warns that no single psychotropic regimen is consistently effective in SMS and that adverse reactions and weight gain matter.

Therapies and school supports

Useful care is concrete: developmental assessment; speech-language therapy; feeding support when swallowing, choking, or oral-motor issues appear; occupational therapy for adaptive skills and sensory needs; physical therapy for mobility and orthopedic risk; and an individualized school plan. If expressive language is limited, ask for an augmentative and alternative communication evaluation rather than waiting for speech to catch up.

Food, and what caregivers reported

Food-related behaviour in SMS is distinctive enough that researchers developed and validated a syndrome-specific questionnaire, the SMS-FRPQ, with 125 caregivers in 2026. A separate 2026 qualitative study says that, before that work, no research had described strategies caregivers successfully use to help people with SMS manage food intake. The evidence is new, and it comes from families rather than from a clinic protocol.

Researchers interviewed 23 caregivers of 21 individuals with SMS and analysed the strategies caregivers reported using. The organising idea they found was empowerment through structured boundaries: explicit limits, literal and figurative, inside which the person with SMS still gets real choice. Not restriction, and not a free-for-all — a bounded space with genuine choices in it.

• Structuring the environment, so the boundary is a fact of the room rather than an argument with a person.
• Setting the stage in advance — anticipatory guidance, saying what is about to happen before it happens.
• Positive language and deflection rather than refusal, when resistance builds.
• Offering choice within the limit, which is what makes it empowerment rather than control.

This is qualitative research on 21 individuals, not a trial, and it is about strategies rather than diets or doses. Its value is that the authors identify it as the first published description of caregiver strategies for this question. Weight, growth and nutrition still belong in the medical review — the PRISMS checklist covers them, and SMS-specific growth standards were published in 2026.

The medical checklist

Use the PRISMS / GeneReviews medical management checklist after diagnosis and at annual reviews. It is the closest thing to an appointment agenda: sleep, development, behavior, growth and nutrition, reflux and constipation, dental and palate issues, hearing, vision, cardiac and renal anomalies, thyroid, lipids, immune function, seizures, scoliosis, and family support.

A 2026 point to raise with the prescriber: a study of melatonin levels in 89 individuals with SMS found significantly higher daytime melatonin levels in participants taking exogenous melatonin than in those not taking it. Nine participants with very high levels saw them fall significantly once exogenous melatonin was stopped. The authors strongly recommend measuring a melatonin level before starting, to set the dose, and again during treatment — and they found that CYP1A2 genotyping does not predict enzyme activity well enough for this purpose. This is a question to bring to the prescribing clinician. It is not a reason to stop anything on your own.

This page still gives no doses and no individual recommendation. Tasimelteon, melatonin, beta-blockers, psychotropic medication, and safety equipment all need a clinician who knows the child's age, diagnosis, country, other medications, heart and lung history, seizure history, and family situation. The point is to make the next appointment specific, not to self-prescribe.