Fibromyalgia Support Group
You're not alone in your pain. Fibromyalgia is a condition that can be difficult to diagnose and manage. If you're trying to cope with pain throughout your body, sleep problems, general fatigue, or other common fibromyalgia symptoms, you're in the right place. The community is here for you to talk about therapies and share your challenges.
Dont know if that will work, its flat and has a head support but this causes issues as too big, tried rolled towel and small cushions but no good, I never seem to get it right my body is so sensitive
The one I use is made of memory foam, and is shaped in a "U".
I use mine in the truck for road trips, it helps keep my neck from hurting.
I hope you find a way to still use the chair and be comfortable but it not increase pain and problems for you. Maybe try out some of the suggestions mentioned. they sound good.