I've had episodes of this since I was very young. It seems like I go through phases of having it constantly then I won't have an episode for months.
This week I've had it every single night about ten mins after going to sleep. I've not been drinking any alcohol, watching anything on TV, not had a nap during the day, not sleeping on my back yet it's still happening. When I wake up from it I have to get up and wake up properly for half hour as if I drop back off to sleep it will keep happening.
No one I knows has this apart from my brother who I hardly speak to. Does anyone suffer from this and have any advice? It's causing me loads of anxiety at bedtime as I just know it's going to happen and it's terrifying.