Hi: I have been on Lexapro for about 4 months. I had such unrelenting fatigue in the afternoons when I took the 10 mg in the morning, I switched to taking it at night. That helped. However, I have been having "blank out" periods where my brain literally doesn't work. I space out while answering someone's question, for example, or forget what I am thinking about, mid-thought. It's quite scary. I also have weak muscles. I am a moderate runner--about 15 miles a week. But I can hardly manage 7 or 8 right now and walking the hills of my neighborhood in Seattle--which used to be a part of my exercise plan, is exhausting. Overall, I am also feeling less ambitious and motivated than at any period in my life.

I just turned 37 so was attributing some of these things to age--but I am not THAT old, and these came on fast and furiously! Any ideas if any of these/all of these are related to Lexapro? I have read, to my chagrin, that there are withdrawal symptoms to be experienced if I choose to go off--those seem to include heightened anxiety and irritability--things I was experiencing  over the past winter to a high degree and so thought I needed this medication. I got the medication from my internist and he is slightly concerned because I have had a few diagnoses of low-level cyclical mood/bipolar disorder. Any advice at this point: to stay on or not to stay on...to be concerned or not to be concerned, would be greatly appreciated.