What could be wrong?

A friend of mine messaged me, concerned with what could be wrong with him. I’ve tried to figure it out myself, and searched the internet, but I can’t come up with anything.

Symptoms:

1. Fading in and out of consciousness
2. Can not get cool or warm
3. Heart racing
4. Losing track of time
5. Moving rapidly
6. Unusually hyper and hyper-alert
7. Shortness of breath

He’s overweight so that may be part of the problem, but I’m not sure. It doesn’t sound like a heart attack or anything like that. He has been eating to keep his blood sugar up, so that isn’t the issue either. I have suggested to him to drink some water for now.

As you can imagine, my only real source of medical information is WebMD, which isn’t helpful (mostly because it’s not specific enough with symptoms and because it gives you the worse diagnosis possible first)

Unfortunately, he is at work so there isn’t much he can do at this point in time due to the hour (it’s 2:30 AM here on the East coast)

Any ideas?