Beth, what you have just said is something I've heard so often. It usually means that the taper schedule your doctor gave you was wayyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy too fast. What you and your doctor interpret as your original condition returning is, more often than not, withdrawal. Only doctors don't recognise withdrawal because there are no studies to support it... but studies are funded by drug companies who are only interested in making money.... and modern western society basically worships science..... and therefore relies on empirical studies.... but there are no studies supporting anti-depressant withdrawal..... so the drug reps tell the doctors it is the original condition returning..... and give the doctors plenty of financial incentives to prescribe their drugs.... etc etc etc.
Most doctors mean well but they are ill-informed. I'd lay odds that you could get off Lexapro if you just do a slow taper. By slow I mean 10% of your current dose every 3-6 weeks. If you want more info I'll pm you the link to a forum I go to that helps people with this.
BTW I have major depressive disorder and GAD so I fully understand why you would want to control your anxiety. However, a far better method is to have therapy whether it is talk therapy or CBT. Both give you the tools to learn to live with your anxiety and are far longer lasting than any medication.
I say all this not to frighten you, but from one who was on Aropax for over 10 years before getting addicted. Then switching to Lexapro for a few months before trying Cymbalta. After that my brain chemistry was so messed up that I couldn't sleep for love or money and finally sought help from a naturopath. I reinstated the Aropax, stabilised, and i'm now very very slowly weaning off.
Just wanted you to know. Whatever you decide to do is totally your decision
Junior