I've been withdrawing from Lexapro as well, at least I think that is what it is. I was on 10mg every day for a year or so, then went down to five for a couple months, then to 2.5 every day for about 3 weeks, stopped that, then started having symptoms of dizziness, headaches, "brain zaps", irritability, difficulty concentrating, sensitivity to noise and light. I started taking 2.5mg again, every other day for about two weeks. I stopped taking it 3 days ago, severe symptoms again.