PWSA Blog

Ask Nurse Lynn: Sleep Issues and Medications

Question:

Male, 6 years old, deletion subtype

My son is 6 and has PWS and autism. He has struggled with staying sleep for quite some time now. No problem falling asleep, but he consistently wakes up between 12:30-1:30am every night and will sometimes stay awake for 1-2 hours before trying to go back to sleep, only to wake up 30 minutes later. We tried a BIPAP machine with no luck. Melatonin doesn’t help. His sleep doctor has suggested a few meds and I’m curious if you know which sleep meds are most successful in people with PWS. She has suggested trazodone, cyproheptadine, guanfacine, or clonidine. She said trazodone is sometimes associated with weight gain, and I’ve heard that cyproheptadine can increase your appetite. I would love to get your advice/thoughts!

Nurse Lynn’s Response:

Sleep problems in children with PWS are very common, and research shows that many kids have trouble staying asleep even when they fall asleep easily. Studies of children with PWS tell us that sleep is often disrupted for many different reasons, things like sleep apnea, lighter sleep cycles, trouble moving between sleep stages, or the brain waking up too easily. Some children have central sleep apnea when they are young and later may develop obstructive sleep apnea. Even when breathing is treated, many kids still wake up in the middle of the night because their sleep is more fragile.

Because sleep problems in PWS can have many causes, medications are usually only a temporary fix. There is no single “best” sleep medicine that works for every child. The right choice depends on why your child is waking up, whether it’s from snoring, trouble breathing, discomfort, or the brain having trouble settling back down after an awakening. This is why a full sleep evaluation is so important. If there is untreated sleep-disordered breathing, like apnea or low oxygen, sleep medications will not work well. Sometimes the pressures on the BIPAP need to be checked or adjusted, or it may be worth exploring why the machine is hard for your child to use.

Your sleep doctor mentioned several medications. Melatonin only helps with falling asleep and works best when the room is dark and screens are off. It usually does not help children stay asleep. Trazodone may help with falling asleep and staying asleep, but it does not work for everyone and needs monitoring for liver function. Clonidine can help with behavior and sleep, but it cannot be stopped suddenly because that can affect the heart. Guanfacine is calming and may help some children who wake up feeling anxious or overstimulated. Cyproheptadine can make children sleepy, but it can increase the appetite.

The first step is always to look for the cause: apnea, discomfort, constipation, reflux, or an arousal from lighter sleep. Once those are addressed, sleep medicines often work better.

Resources:

https://www.sciencedirect.com/science/article/pii/S2667343624000271

https://pmc.ncbi.nlm.nih.gov/articles/PMC9163612/

https://www.pws.org.nz/wp-content/uploads/2018/06/Assessment-of-sleep-breathing-in-adults-with-PWS-case-control-series.pdf

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