Chances of Acne Coming Back After Accutane Treatment?

The higher the dose, the greater the chances of long-term remission. While nothing is 100%, Accutane is your best chance for a "cure". In my experience of prescribing Accutane for 26 years, I'd guess you have an 80% chance of significant, long-term remission of your severe acne. If it returns, look into possible hormonal causes for your acne, like polycystic ovary syndrome.

The most likely scenario is that after approximately 4-6 months off Accutane, you would notice a few pimples every now and then that might be controlled with a single topical medication. In general, when a full course of Accutane is taken as in your case, you should notice significant long-term benefit, that is, if your acne recurs, it should be far less in severity than it was before Accutane. Good luck.