<unk>  was a term used to describe a devotion, attachment, dedication, inclination, etc. Nowadays, however, the term<unk>  is used to describe a recurring compulsion by an individual to engage in some specific activity, despite harmful consequences to the individual's health, mental state or social life. The term is often reserved for drug<unk> s but it is sometimes applied to other compulsions, such as problem gambling, and compulsive overeating. Factors that have been suggested as causes of<unk>  include genetic, biological/pharmacological and social factors.
Addiction
Doping 
Rational addiction
Cocaine dependence
Fetishism
Suicide
Opiate withdrawal
Opioid abuse and dependence