You should taper IMHO. It's always a good idea unless you are having severe side effects and it doesn't sound like S.J syndrome for sure. That will put you in the E.R within 24 hrs..I take lamotrigine at 300 mg. Unfortunately it can cause breakouts. I had a breakout on my back and I have never had epidermic issues before but like an earlier person mentioned. Mine did go away. Not to say that it isn't a long term, reoccurring, and/ or chronic issue for some people.
Make sure you talk to your pdoc, doc, or health care provider about this. If you haven't already.