My daughter used to have these night terrors between the ages of 5 to 10 years old, until I found there was a pattern to it. I read all about night terrors in children and knew they weren’t doing anything to her, but for the person who watches it happening it is very scary. So, after a few somewhat frequent ones during one very active summer, I discovered that there was a specific pattern to it and that somehow I was disrupting her sleep cycle and triggering the night terrors. They occurred after the following: she would fall asleep after a very long and exhausting day either on the couch, or in the car on our way home from a trip; so I would wake her up to take her to her bed, and once she was in her bed sleeping maybe for 30 minutes or so, she would wake up with a night terror. So, I decided not to wake her up if she fell asleep on a couch or in the car. I would leave her sleeping the whole night on the couch, and in the case of the car, I would carry her from the car to her bed trying very carefully not to wake her up in the slightest. She is 14 now and never have had them anymore. So my suggestion is to take notes of what happens the day of the night terrors, maybe you can find a pattern too. Take note of every detail. I have read from sleep experts that sometimes even sounds can disrupt sleep and trigger them too. Hope this helps.