How can you treat arm acne?

I have it on both arms. How can you get rid of them?How can you treat arm acne?
Find out what you are allergic to. If you are a clean person who showers and washes every part of your body-the ONLY reason for acne to be on your arm, legs, etc..is most likely an allergy. My son and I are allergic to everything environmentally, but- also, we are allergic to milk, wheat, corn, yeast, rice, and potatoes. Try and rule some things out..Have you switched laundry, bleach, or fabric softener? What do you eat pretty much all the time and the ingredients-are they in these foods you are eating on a regular basis? Milk, wheat, and corn. Makes my son and I break out-but it looks a lot like eczema. The rice and potatoes are now doing the same thing. The yeast-we are not sure because anything with yeast in it-will have the other ingredients with it. Our face gets flushed-we feel hot and get very moody, and our heart wil race the second we eat something we are allergic to. When you are allergic to so much stuff-You can't avoid it completely-you just learn to not over do it. Also, once you are prone to allergies, especially, food allergies, You are prone to develop more allergies because you are eating a lot of other stuff and a lot of it to avoid what you are already allergic to. All I can say is, use a face wash for acne on your arms, but also get to the source and try to avoid it. Good Luck!!!!!!!