Drug abuse is consumption of drugs, other than for medicinal purposes or in unnecessary quantities .people who abuse and develop dependence on narcotics drugs and psychoses substances are generally known as ''drug addicts'' From the sociologist point of view ''drug addiction is the state of assimilation into a specific life style of drug taking ''where is from the psychiatric and medical point of view. it implies physical ,psychological and psychic dependence on the tolerance of drug with tendency to increase the doses, legally in several countries it is explained as ''habitual use of drugs ,associated with their loss of self control and consequences detrimental to the individual and harmful to the public morals, safety ,health and welfare of the society .
The world health organization (WHO, 1973) has defined drug abuse as a stat of periodic, chronic intoxication, detrimental to the individual and to the society, produced by repeated consumption of drugs either natural or synthetic. The value loaded meanings of terms like drug abuse, drug addiction, drug habituation etc .forced the WHO( 1974)to replace this concept with the new one called ''DRUG DPENDENCE" the WHO defies this as a state arising from the above conceptualization of drug abuse.
It is not a new problem to be takeled, it is being dealt globally since so many decades but now it demands specials emphasis and integrated by developing countries that require extensive programs but have limited resources as compared to developed countries that have well planned principles to follow.