Alcoholism is a term with multiple and sometimes conflicting definitions.

In common and historic usage, alcoholism refers to any condition that results in the continued consumption of alcoholic beverages despite health problems and negative social consequences. Modern medical definitions describe alcoholism as a disease and addiction which results in a persistent use of alcohol despite negative consequences. In the 19th and early 20th centuries, alcoholism, also referred to as dipsomania described a preoccupation with, or compulsion toward the consumption of, alcohol and/or an impaired ability to recognize the negative effects of excessive alcohol consumption.

Although not all of these definitions specify current and on-going use of alcohol as a qualifier for alcoholism, some do, as well as remarking on the long-term effects of consistent, heavy alcohol use, including dependence and symptoms of withdrawal.

While the ingestion of alcohol is, by definition, necessary to develop alcoholism, the use of alcohol does not predict the development of alcoholism. It is estimated that 9% of the general population is predisposed to alcoholism based on genetic factors.fact: date=May 2009 The quantity, frequency and regularity of alcohol consumption required to develop alcoholism varies greatly from person to person. In addition, although the biological mechanisms underpinning alcoholism are uncertain, some risk factors, including social environment, stress, emotional health, genetic predisposition, age, and gender have been identified. For example, those who consume alcohol at an early age, by age 16 or younger, are at a higher risk of alcohol dependence or abuse. Also, studies indicate that the proportion of men with alcohol dependence are higher than that of the proportion of women, 7% and 2.5% respectively, although women are more vulnerable to long-term consequences of alcoholism. Around 90% of adults in United States consume alcohol and more than 700,000 of them are treated daily for alcoholism.

Definitions and terminology

The definitions of alcoholism and related terminology vary significantly between the medical community, treatment programs, and the general public.

Medical definitions

The Journal of the American Medical Association defines alcoholism as "a primary, chronic disease characterized by impaired control over drinking, preoccupation with the drug alcohol, use of alcohol despite adverse consequences, and distortions in thinking."

The DSM-IV (the standard for diagnosis in psychiatry and psychology) defines alcohol abuse as repeated use despite recurrent adverse consequences.APA Dictionary of Psychology, 1st ed., Gary R. VandenBos, ed., Washington: American Psychological Association, 2007 It further defines alcohol dependence as alcohol abuse combined with tolerance, withdrawal, and an uncontrollable drive to drink. (See DSM diagnosis below.)