Alcohol addiction is one of the most common problems related to drug use worldwide. Alcoholism is a multifactor disorder in which biological and genetic factors interact. The study was carried out between the 1st of January 2009 to the 31st of January 2010 in drug addiction clinic of University Hospital Socola. The study was conducted on a sample of 100 patients admitted for harmful drinking. Each patient underwent medical examination and clinical-psychological outlook during hospitalization. Severity score consumption was estimated using the MAST (Michigan Alcoholism Screening Test). The purpose of the investigation was to reveal certain bio-psycho-social aspects of cases diagnosed with alcohol. The personality of alcoholics was evidenced by Cloninger classification. Jellinek proposed four types of alcohol depending on the severity, loss of control, craving, withdrawal and somatic problems appearance.