acne
"I had severe acne, rosacea and had tried tetracycline antibiotics, Duac, Differin and Dianette to get rid of it with no results- it was that bad I had stopped going out! Referred to dermatologist and prescribed isotretinoin at 40mg per day. Within 7 days my face had cleared completely. This is like a miracle. My skin is still slightly red from the rosacea but nothing I can't cover with concealer. 
Side effects so far are blurred vision, muscle pains and dry skin and lips- been through 4 tubs of Carmex in the four weeks I've been on Accutane. Using cetaphil moisturiser and E45 emollient cleanser. Cannot recommend this enough- side effects are annoying but well worth it in the short term in my opinion. Wish I'd insisted on this 4 years ago."