A common fear, but crippling. You should avoid being underground if possible; if something happens to your flashlight or torch, you might well lose your mind before you can relight it.
Make a self-control roll whenever you experience a clear social slight or “snub.” On a failure, you lash out at the offending party just as if you had Bad Temper.
Make a self-control roll whenever you must maintain interest in something for an extended period of time, or whenever a distraction is offered. If you fail, you automatically fail at the task at hand.