الفهرس 
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Abstract
The non-medical use of drugs has begun since the dawn of history. Man was
consistently looking for substances around him for his pleasure (Perrine, 1996)(1)
The dividing line between legitimate use of drugs for social purposes and their
abuse is indistinct for it is not only a matter of which drug, but of the amount of drug
and of whether the effect is directed antisocially or not. ’Normal’ people seem to be
able to use alcohol for their occasional purposes without harm but many may become
dependent on it, both emotionally and physically (Laurence & Bennett, 1991 i2)
Drugs used for non-medical purposes are often divided into two groups, hard
and soft. Hard drugs are those that are liable seriously to disable the individual as
functioning member of society by inducing severe emotional and, in the case of
cerebral depressants, physical dependence. The group includes heroin, morphine and
analogues. Soft drugs are less dependence-producing, there may be emotional
dependence, but there is little or no physical dependence except with heavy doses of
depressants (El-Koms, 1986i3) • The group includes sedatives and tranquillizers,
amphetamines, cannabis, hallucinogens, alcohol, tobacco. (Laurence & Bennett, 1991
and Abou-El-Rous, 1996)(2,4)