Alcoholism: Symptoms, Causes, and Effects Alcoholism is a disease that affects many people in the United States today. It not only affects the alcoholic, but also their family, friends, co- workers, and eventually total strangers. The symptoms are many, as are the causes and the effects. Alcoholism is defined as a pattern of drinking in which harmful consequences result for the drinker, yet, they continue to drink. There are two types of drinkers. The first type, the casual or social drinker, drinks because they want to. They drink with a friend or with a group for pleasure and only on occasion. The other type, the compulsive drinker, drinks because th