<unk>  is a state characterized by a compulsive engagement in any form of physical<unk> , despite negative consequences. While regular<unk>  is generally a healthy activity,<unk>  generally involves performing excessive amounts of<unk>  to the detriment of physical health, spending too much time<unk> ng to the detriment of personal and professional life, and<unk> ng regardless of physical injury. It may also involve a state of dependence upon regular<unk>  which involves the occurrence of severe withdrawal symptoms when the individual is unable to<unk> . Differentiating between addictive and healthy<unk>  behaviors is difficult but there are key factors in determining which category a person may fall into.<unk>  shows a high comorbidity with eating disorders.<unk>  is not listed as a disorder in the fourth revision of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV). This type of addiction can be classified under a behavioral addiction in which a person's behavior becomes obsessive, compulsive, and/or causes dysfunction in a person's life. The next revision of the DSM (DSM-5) will include an addictions and related disorders section; gambling is the only non-substance addiction that is likely to be included. Other non-substance addictions, such as<unk> , are being researched but their inclusion is undetermined.
Exercise addiction
Nicotine dependence
Caffeinism
Nicotine withdrawal
Carcinoid syndrome
Food addiction
Metabolic syndrome
Alcohol intolerance