Bacne, back acne, body acne
I have some suggestions for you to try or if you are on a budget. Mario Badescu makes a wash for the body that is for body acne. Also, with the weather being hot and humid, wear clothing made of cotton since cotton is breathable. Try to stay away from using any fabric softeners when you wash your clothing and any perfumed laundry detergents. Look for the dye-free and frangrance free ones like ALL. Change your bedding one to two times a week since bacteria and sweat accumulate on them. Please do not over wash your skin...it just makes it worse. Try a loofah sponge to clean your body. When you wash your hair make sure you do not leave any shampoo on your body..this is a trigger for breakouts especially on the upper back and shoulder area. When you finish washing your hair, either wrap it up in a towel or use a shower cap.
As for the scars, they are a result of the trauma your skin went through and can take months to heal and fade. Recommending a cream for this could irritate your skin more. You might want to try the Clarisonic if your finances permit it. I hope this helps..........