How To Treat Rashes And Pimples Due To Scratching?

hello doctor.from about 2-3weeks i am suffering from skin problem.i always used to scratch my skin either with nails or anything else like stylus of my phone etc.i enjoyed it very much.after scratching some time,skin become red, and skin swells,peanple starts to come out.after masturbating peanple comes in my penis.....i fred up from all this.tell me something some treatment..i am 19 year old and height is 5'10'' and had no big problem in my body in history