What causes all this acne on my face chest back and bottom, how can i treat it for it to come off?

Acne: Studies indicate that certain dietary factors, including dairy products and carbohydrate-rich foods — such as bread, bagels and chips, chocolate, and acidic foods which increase blood sugar — may trigger acne. Other causes include hormones, stress, and medications. Treatment is with oral antibiotics like Doryx or solodyn (minocycline) and topical prescription meds like epiduo, ziana, acanya or atralin.