My doctor increased my dose of lexapro from 10 mg to 20 mg about two- three weeks ago. When I first started on the 10 mgs my only side effects were nausea, tiredness and some occasional heightened anxiety. Now on 20, I've been getting headaches, extreme tiredness and my anger is way out of control. I've been losing it almost entirely randomly on my boyfriend, the smallest things will set me off. I'll just start screaming and go from 0-100 super quick, Is this normal? Anyone else experience heightened anger after increasing their dose?