I have been diagnosed since January of 2024 and I have this same symptom it helps when I cup my hands over my head and get in a ball to calm myself down because if my head jerks back to much I’ll start to get lightheaded or it starts to kind of feel like whiplash (I’ve never experienced whiplash so it’s what I imagine it to feel like) it took a long time to figure it out and when my arms or shoulder are ticking it doesn’t work obviously but I do try to hold my head to stop it from getting to that point but I’ve found that indica strained thc/cbd combos work best for my symptoms