Define risk factors? I'm a little confused, but I'd really like to help further!
If it's any help, I can tell you that early signs of self-harming actions usually involve:
-Sudden mood swings
-Lack of motivation
-A depletion of desire for making contact with others
-Bad appetites
-Irritable attitudes
-And an overall negative attitude.
I hope this helps! Please comment if you need any more help!! :)