What is Reddit's opinion of LitoTree Comfort Memory Foam Neck Roll and Cervical Bolster Round Pillow with Removable Washable Soft Cover for Spine and Neck Back Lumbar Leg Vertebra Support (18x3.5 inch Pillow)?

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I did the same thing, at my PT's suggestion, and it's really helpful. I put the little pillow roll at the bottom of a flat "normal" pillow.

The one I bought is here: https://www.amazon.com/gp/product/B07L8RQTGB/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1

However, the trick with these pillows is to get the right size. The idea is to find out the size of pillow that will put your neck in a neural position.

A lot of them come in 4" diameter but I needed a smaller one (3.5"). The best way to figure out what size will align your neck is to take a bath towel and roll it up tight. Then use it like a pillow roll, and see if your neck is aligned when you lay on your side with roll + bed pillow. If the towel roll feels like it's pushing your neck upward, try unrolling it a bit. Once you have a size that feels comfy, use a ruler to measure the diameter of the towel roll. That should give you the approximate size you need.

I would not recommend sleeping in a neck brace unless you have the explicit ok from an EDS-aware doctor. We (with EDS) depend on our muscles to compensate for our loose ligaments. Wearing a brace can weaken the neck muscles, which will only make your situation worse. Even when I'm having painful neck spasms, my expert EDS PT won't let me wear a soft collar for more than an hour or two.

I started using a roll pillow while sleeping on my back

https://www.amazon.com/dp/B07L8RQTGB?psc=1&ref=ppx_yo2_dt_b_product_details

Helps out a lot!