Hi..5 6 months ago,I used L arginine for muscle growth, and since then my itching hasn t stopped. It s so sever that it even wakes me up in the middle of the night. At the early stages of consumption, the itching was mild,slowly began to grow. Most of the itching happens around my privates and my lower back. I have tried hydroxyzine, it helped for a few days buy that doesn t help either.plz help.