Generalized Anxiety Disorder (GAD).

There are many paths to experiencing Generalized Anxiety Disorder (GAD). But if patients are coming from such different experiences, should we really consider them all to have the same disorder? For example, should one patient with GABA inactivity and another patient with maladaptive assumptions really be lumped together in the same category? Bring a new reference that speaks about the variety of causes of GAD (this can be a website or youtube video), and give your view on the heterogeneity of the disorder.