Scratching picking and eating.... Oh my

Holy crap, does it feel good to know i am not alone. I will pick at anything until it become a scab and then pick the scab so many times that I cannot wear shorts or tank tops during the summer. I lay in bed every night, it a trance almost, just searching my thighs and butt. All of my sheets and blankets are all stained with blood speckles. I get alot of pimples on my face and pick them and end up having them for soooooo long. It cannot seem normal to the people I work with! Oh dear, but the scabs on my head have finally gone away. I used to have them as a kid really bad. 7 or 8 huge scabs and the hair would all come out from pulling out the scabs. Then whispy little patches would grow back in and stick straight up. I remember as a kid going to get my hair cut, begging my mom to not make me go (but not explaining why) and the beautician calling my mom over to see my scalp. It was so embarrassing. At some point the healed up. Then .., for some reason at 31 I started picking again! And had about 5 chunky scabs that I picked on my way to work and as a reward on my way home. But my friend got married and I had to let them heal up because I was going to have my hair professionally done. It was sooooo HARD to not pick but in about 3 days they healed up! Now my butt? That is a whole different story.... It's so scarred and terrible. It's just terrible. Some embarrassing! My husband loves me and knows I have a problem. I started using a salacylic acid wash on my face and when I am done I wipe soap on my butt and it seems to be helping. If I could just stop getting the pimples, I would have nothing to pick at! And I eat my boogers. I am sooooo embarrassed that I cannot even elaborate.