Hey I Have A Younger Sister Who Is 16. She's Experiencing Acne On Her Back, But It Doesn't Look Like Acne. She Has Marks On Her Back & Sometimes The Areas That Heal Up On Her Skin, Reopens & Bleeds. If She Sweats On Her Back The Acne Itches. If The Sun Or Heat Beams On Her Skin It Itches. She Saw A Skin Doctor But She Told My Sis It Was Acne. But I Know It's Not Because It Looks Horrible. I Didn't Upload Any Pics Because My Sis Said She Would Be To Embarrassed 💔😔. What Can I Do To Help Her?