acne
"I had painful and extreme cystic acne in isolated areas on both sides of my chin when I was in college. I underwent accurate treatment at 23 right when Accutane was approved by the FDA. I took the treatment for 3 months and the side effects were very dry lips, sometimes splitting. It totally eliminated my acne and my self confidence, social life, and career soared. I tried everything before this treatment and nothing worked and was extremely happy with the results. 

At about age 35, my acne cysts reappeared, although not as severe. I underwent another 90 day treatment and haven't had any reoccurrence since."