Hi Tootsie and Polar,
It's sometime since your post but I agree with Polar many doctors revert back to a persons "mental state" being the cause of all symptoms. You are right many people look on a human response like grief as a weakness or mental illness, your just human. It would appear no matter where you are if you have been on an antidepressant you will always wear a label on your forehead; sad world.
It isn't all in your head, the effects are real and well known. Lexapro has a short chemical half life - it washes out of your system in a few days not giving enough time for your brain/body to adjust to the change in levels hence the withdrawl symptoms. To avoid this is to gradually reduce the dose over a period of time; that time frame determined by you and your ability to cope. Slower you go the better.
Nick