do i have dermatillomania?

hey i'm completely confused but i think i may have this condition. after suffering with acne for about 4 years i was eventually given a course of tablets which really worked. my skin got a lot better. ever since then, every time i get a tiny spot or anything on my face i can't help but pick at it. sometimes it means i can't leave the house for days. today is one of these days. i couldn;t go to college today. no one seems to understand. i didnt hear about this condition until today. i didnt think it was uncontrollable, until today when i start to think about it, i never seem to be able to stop myself. i feel like if i let myself get a spot, i am going to get acne all over again. picking it seems to be a control over this, only it makes it 100 times worse. i was just wondering if you could tell me whether i have this condition or not. thanks for your help!