Facts To Know!! Generalized anxiety disorder is more prevalent in developed countries. Women are twice as likely to be affected as men. Generalized anxiety disorder often co-occurs with major depression. Only one third of those suffering from Generalized Anxiety disorders receive proper treatment. Generalized anxiety disorder often begins in childhood or adolescence but may start at any age. Generalised Anxiety Disorder Watch short video introduction on what Generalised Anxiety Disorder looks like.