Hi. My 4 year old daughter had a rised temperature rapid breaking and was very tired she woke a couple of times and one time she woke she had two or three sudden jerky movements involuntary. It looked very much like the moment we all have when you just dose off and suddenly wake up as if you were made to jump. We had a very busy weekend with a couple of late nights. She had capol this.morning and now seems fine. And no sign of fever or temperature.
HI...as you classically describe the movements as - very much like the moment we all have when you just dose off and suddenly wake up as if you were made to jump - I feel this is benign sleep myoclonus, and it is common for some kids while going to sleep and while coming out of sleep. If she has not lost her conscious and there are no signs of limb weakness, you need not worry. But if this becomes repetitive, then I suggest you consult your pediatrician. Regards - 