Oh yeah it’s completely irrational. Used to be like this myself particularly when living in a dorm during college. Couldn’t tell you what I was scared of to be clear. No thoughts led me there, no experiance with people, no issue with talking to people even. I know if just walked out I’d be fine

When I was next to the door and heard someone in the hall I’d just feel nervous and fearful. I’d standby the door with my ear against it steadying my breath without making a sound until the were gone. Particularly aweful when the bathroom was down the hall you know.

Notaclue what changed either I just kinda stopped caring at a point