Medication side effect

Can’t be 100% sure but it seems I have developed or “contracted” a type of folliculitis related to Dilantin. Basically, a type of acne. Problem is it seems not to be a very good thing to occur.
I’ve been taking Dilantin for almost 30 years (I’m 55). It’s the only thing that seems to work controlling seizures. Last seizure was more than 10 years ago, that was related to a different drug. That happened within 3 days of taking it.
It appears to be a pretty serious situation. Like I need this now.
Done venting.
Will call Dr.