Toddler Slept 45 Minutes Last Night

I'm not exaggerating. My 2 year old who normally sleeps 730/8P - 530/6A was up all night. He's not sick, not in pain but he's awake ALL NIGHT. He slept 730-10 and then woke up screaming. He was scared to go back in his crib but wouldn't sleep anywhere else either. I tried the couch and my bed and I noticed he would fall asleep for a few minutes and then wake up again. I'm so confused by this. What could it be? He's up now acting totally fine, like he got good sleep. I, however, am near death.