For me, the biggest symptom of any AD is feeling depressed whenever you aren't currently waiting for a new purchase to arrive, so you go out in search of something to buy in order to fill that emotional void.
This is it. This is exactly my feeling. I blew 100 bucks today, only because the items I am waiting for are being made and will require a month, or simply being delayed by customs. I have to have something in a day or two or I'll loose my cool!