Enbrel hasn't been around that many years, but its safety record so far is excellent. It's hard to be absolutely sure, but your dermatologist is no doubt correct that if you stop the Enbrel, the psoriasis is likely to come back full force sooner or later, not necessarily worse than before, but no better either. All else being equal, I'd stay on it.
Take care.
Dr. Rockoff
Take care,
Liz.