What are these mini nervous breakdowns I get when I'm sick and why do I get them?

It’s hard to describe them. The first time I had one was just a few days before I turned 13. I had an ear infection. I was on vacation in Florida and in the hotel room one night I woke up in the middle of the night and felt wierd. I felt lighter… I guess. Like when your foot falls asleep but it was my whole body. I paced around the room and eventually went onto the deck and paced back and forth. I started crying and calling for my parents. It was like I thought everyone was going to die. I mean I knew it wasn’t true but at the same time I couldn’t convince myself it wasn’t. The second time I had a slight fever. I was at my mom’s house and I wandered into her room and got in bed with her. The next morning she told me I’d been talking in my sleep and asking for her. The third time was at her house too. I had an upper respatory infection. I wandered around the house and for some reason did math. Like I was all, “14x100 is 1400…” The bigger number I got the better I felt. The latest one was last night. I got in and out of bed over and over again. I went and got my dad and brought him into my room and I remember saying insane things though can’t remember exactly what. He stayed with me until I fell asleep. Why do I do this? And why only at night? They scare me and it’s embarrasing when I bring my parents into it like last night. Any suggestions?