acne
"I'm a 20 year old with severe acne on my face. I took 40 mg for the first two months and am currently on 60 mg. I am on my third month and am starting to see great results. 
Some of the side effects that I've had are very dry skin near my mouth and nose, chapped lips (especially on the corners), and sore shoulders.
(All of which I've found relief for, thankfully. Clinique Dramatically Different Lotion for my skin, Vaseline for my lips, and the occasional Advil for when I am sore).
I still have a few cysts on my jaw and lower cheek but they are slowly disappearing. 
I have a lot of hyperpigmentation and scarring from years of severe acne but I am hopeful.
This medication is very expensive but I really feel like it has been worth it."