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Because the early alcoholic shows no sign of disease, the logical but wholly mistaken idea persists that alcoholism begins only when the drinker does suffer from drinking and does show some deterioration in physiological functioning, such as severe withdrawal symptoms, personality disintegration, or inability to control his intake.
Before these visible symptoms appear, most people assume that alcoholics and nonalcoholics experience precisely the same physical reaction to alcohol. In fact, they do not. The alcoholic reacts physically in an abnormal way to alcohol, and his disease begins long before he behaves or thinks like an alcoholic.
The reactions or adaptations of the body's cells to alcohol remain hidden in the early stages of the disease, but they are nevertheless happening. In months or years, the cells will have been so altered by alcohol that the alcoholic's behavior and thought processes will be affected. Then the disease will no longer be hidden, and the alcoholic will clearly be in trouble with alcohol.
In the early stage, however, the disease is subtle and difficult to recognize. It is characterized by adaptations in the liver and central nervous system, increased tolerance to alcohol, and improved performance when drinking.