Is she wrong?

Went to a dermatologist yesterday to start taking accutane after 1 year of acne. I've always had this fear of the well known side effects caused by this med (such as the psychological related effects,the purge, etc),so I asked the doctor about it, but she said it is all a lie,and that there's no purge or even side effects( just the dryness) and that only 1 month of med use already shows notable results.But seeing all the posts here makes me very reluctant in relation to all she said,what do u guys think abt it?Is she right? Is the purge something rare?