I just visit dermatologist and he thinks I have Miliaria and this is really what leading to my acne and irritation on my back and shoulders. Any tips about treating the back and shoulders for people with miliaria. I am prescribed minocin 100g each night, I make sure all my shirts are moisture wicking and I shower after gym with cleanser then apply 5% benzoyle peroxide on affected areas. I heard to apply corn starch to skin before working out also helps but I don't know if I really want try that but does anyone know if really works?