I have been prescribed escitalopram (Lexapro) 5mg a week ago for depression and anxiety. After four days I had worst side effects such as insomnia, feverish, and burning sensation. I called my doctor and he told me to discontinue the drug and we can find alternatives after two weeks (he is on vacation now). I stopped after 5 days of 5mg, now the feverish burning sensation has gone. But last two days I have problem in getting good sleep, waking up in the middle of the night (though I am depressed I got at least 6 hrs sleep before drug), and also lack of appetite. Are these withdrawal effects?