Although shopping addiction and compulsive purchase are conceptually different, they are interrelated and both are manifestations of the same problem: the lack of self-control when buying and to restrain impulses. Shopping addiction is understood as the eagerness for constantly making new purchases of unnecessary or superfluous things. The concept of compulsive purchase is related to the psychological process which causes many people not to be able to control their impulses and wishes of buying, and subjects them to reflexion and evaluation before purchasing. A basic behavioural characteristic of people who have serious problems of consumer addiction is that their purchases are unnecessary and unsatisfactory. Addicts may feel pleasure or relief when they give in to the shopping wish, but regret it afterwards. In cases of people with severe problems of shopping addiction, this remorse can lead to very deep feelings of blame and discomfort.