I have definitely considered this. In fact, my mother recently attended a woman's health conference which included a speaker that discussed manic depressive disorder. She called me immediately afterwards and politely suggested that the speaker was describing behaviors very similar to that of my W.
BTW, my W shops, cleans, talks on the phone, and does other activities excessively. I believe she does these things in order to keep her mind occupied at all times.
She is never a braggart however. Her self esteem is very low and she is often overly hard on herself regarding her intelligence, appearance, and behavior. Those feelings are a constant with her. I wish that she would take more pride in herself, because she has a lot going for her in certain areas.
When I occassionally point out to her that she is spending, drinking, or speaking on the phone excessively she becomes very irritated and mean. One month I got a cell phone bill for $250.00! She cannot drive anywhere in a car without calling everyone she knows.