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Oniomania (from Greek ὤνιος onios "for sale" and μανία mania "insanity") is the technical term for the compulsive desire to shop, more commonly referred to as compulsive shopping, shopping addiction, shopaholism, compulsive buying or CBD or Sushma Syndrome.
Emil Kraepelin originally described oniomania over a century ago, and he and Bleuler  both included the syndrome in their influential early psychiatric textbooks. However little interest was taken in CB until the 1990s, and even in the 21st century compulsive shopping can be considered a barely recognised mental illness.
Research in this area is only in the last decades catching up with that into comparable areas such as alcoholism, eating disorders or drug abuse. There is growing evidence that it is a significant and worsening problem with serious consequences, emotional and financial, and affecting perhaps as many as 8.9 percent of the American population.
As consumer outlets multiply globally, on- and off-line, so too other areas of the world are catching up with the US in oniomania.
The terms compulsive shopping, compulsive buying, and compulsive spending are often used interchangeably, but the behaviors they represent are in fact distinct. (Nataraajan and Goff 1992)[page needed] One may buy without shopping, and certainly shop without buying: of compulsive shoppers, some 30% described the act of buying itself as providing a buzz, irrespective of the goods purchased.
Three diagnostic criteria for compulsive buying have been proposed: 1. Over-preoccupation with buying; 2. distress or impairment as a result of the activity; 3. the compulsive buying is not limited to hypomanic or manic episodes.
While initially triggered by a perhaps mild need to feel special and less lonely, the failure of compulsive shopping to actually meet such needs may lead to a vicious cycle of escalation, with sufferers experiencing the highs and lows associated with other addictions. The 'high' of the purchasing may be followed by a sense of disappointment, and of guilt, precipitating a further cycle of impulse buying in the quest for a sense of special identity. With the now addicted person increasingly feeling negative emotions like anger and stress, they may attempt to self-medicate through further purchases, followed again by regret or depression once they return home - leading to an urge for yet another spree.
As debt grows, so the compulsive shopping may become a more secretive act. At the point where bought goods are hidden or destroyed, because the person concerned feels so ashamed of their addiction, the price of the addiction in mental, financial and emotional terms becomes even higher.
Shopaholism often has roots in early experience, with failed parent-child transactions leading people to turn to objects to fill the sense of void and empty identity. Children who experience parental neglect often grow up with low self-esteem because throughout much of their childhood they felt unimportant as people, and turned to substitute comforts, such as toys or food, in compensation for loneliness. Adults who depended on materials for emotional support when they were much younger are more likely to become addicted to shopping because of the ongoing sentiment of deprivation they endured as children: the purchase instead of the toy or the food is substituted for affection. Perfectionism, general impulsiveness and compulsiveness, and the need to gain control have also been linked to the disorder.
Compulsive buying seems to represent a search for self in people whose identity is neither firmly felt nor dependable, as indicated by the way purchases often provide social or personal identity-markers. Those with associated disorders such as anxiety, depression and poor impulse control are particularly likely to be attempting to treat symptoms of low self-esteem through compulsive shopping.
Others, however, object that such psychological explanations for compulsive buying do not apply to all people with CBD.
Readily available credit cards enable casual spending beyond one's means, and some would suggest that the compulsive buyer should lock up or destroy credit cards altogether. Online shopping also facilitates oniomania, with online auction addiction, used to escape feelings of depression or guilt, becoming a recognisable problem.
What differentiates oniomania from healthy shopping is the compulsive, destructive and chronic nature of the buying. Where shopping can be a positive root to self-expression, in excess it represents a dangerous threat.
The consequences of oniomania, which may persist long after a spree, can be devastating, with marriages, long-term relationships, and jobs all feeling the strain. Further problems can include ruined credit history, theft or defalcation of money, defaulted loans, general financial trouble and in some cases bankruptcy or extreme debt, as well as anxiety and a sense of life spiralling out of control.