This paper studies the expansion of drug addiction in Lebanon during t
he years of civil war (1973-1990). A social and historical review of t
he problem of drugs in Lebanon is presented as an introduction. The pr
ofile of the lebanese drug addict is studied in its various components
: 1) The average age at hospitalization is around 30 years ; the firs
t intake of drugs between 13 and 35 years (mean 20). 2) The sex ratio
is 8:2 male to female. The war has especially affected men in their en
counter with drugs. 3) Heroin is the most widely used product (80,5 %)
, often in combination with other drugs like hashish or cocaine. Only
17 % use it intravenously, the rest by inhalation. 4) There is a certa
in <<democratization>> of the phenomenon of drug addiction (23 % from
the lower socioeconomic class). 5) A preponderance of drug addicts in
the big cities like Beirut and Tripoli. 6) Only 20 % have an underlyin
g psychopathology responsible for the intake of drugs (psychosis, neur
osis). The war has been found conducive to the eclosion of drug addict
ion by increasing the prevalence of the products, the psychological fr
agility of the lebanese people, the economic crisis and the more permi
ssive sociocultural context.