I used to have acne on my upper back and my chest. Only had an occasional zit on my legs. It's not a common place. You may want to look into seeing a dermatologist. There's a chance it could actually be a rash and maybe you're allergic to something you're using.
"All our dreams can come true -- if we have the courage to pursue them." -- Walt Disney
We must have different Gods. My God said "do to others what you would have them do to you". Your God seems to have said "My Way or the Highway".