So this has happened twice before. My boyfriend and I facetime at night. We say our goodnights and hang up. After 15-20 minutes he calls me again and be all panicky. The first time he was all like "I don't know what's wrong" and he was crying. It really worried me. He sudden hung up and then wouldn't answer me at all. I though something had happened and I culfnt sleep. In the morning he told me he was having a night terror. I looked it up and I don't think that's what it was. Right now it's happening again. I'm on the phone with him and he said he was panicky and nervous. He doesn't know what about though. At the beginning of the call he was overheating and shaking and now he's really cold and shaking. He was also feeling really hungry (even though he ate quite a bit before bed) so he got some food. He's still kind of shaking but he's getting a bit better. I'm just wondering if this is anything to be worried about or if anyone knows what it could be. Just making sure he's OK, he's 15, turning 16.

Just noticed this post. How is he now? There really isn't much point in trying to make suggestions, because there are too many questions that need to go directly to him. He needs to ask from his own account.

You could research a common teen age condition called POTS, although it is usually in girls.