Does anyone here have any experience with the psychological symptoms that can come after a head injury? I feel more irritable than usual, and I feel like I have trouble concentrating, or to be more accurate like I'm not even thinking at all sometimes. I also feel like I am oscillating between way too anxious in social situations to way to casual. About three and a half years ago I had two concussions relatively close together (about four months apart) and I think it has to do with that.