Why does10mg of Lexapro (escitalopram) give you a jittery nervous headache the following morning after taking it for 12 months. Is it normal. My dr says no. I wonder.

I would be. Surprised if this was a new occurrence (with no other changes being made- doses/ medication interactions). However, headache and jitteriness can occur with lexapro (escitalopram). Have you been consistently experiencing them over the last 12 months?