I think my AW may have some of this, though she is not antisocial. (Some would say that I'm the antisocial one.) However, she does exhibit some of the other behaviors. Maybe these "isms" overlap somewhat?
AW has been diagnosed with Obsessive Compulsive Disorder, which probably explains most of her behavior. She shows some tendency toward hoarding, and the instant gratification thing describes her to a T.
Anyway, thanks for posting this; I'm always looking for information to help me make sense of this frustrating situation.