As one who has suffered from Generalized Anxiety Disorder and Panic disorder, this article pretty much on the mark. The descriptions here are pretty accurate.
SSRI used to treat BOTH depression and Generalized Anxiety Disorder as well as Panic Disorder. (Paroxetine). The sourcee of my trouble clearly was related to neurotransmitters, and was cleared up with a proper dosage of the SSRI. Also, while waiting the 6 weeks for the dosage to take effect, I read a book on CBT, whi ch also helped tremendously. So, if any of the 40 million who also suffer from this stumble upon this, I hope this helps!