Alcoholism is, broadly, any drinking of alcohol that results in significant mental or physical health problems.
Alcoholism is not a recognized diagnostic entity. Predominant diagnostic classifications are alcohol use disorder (DSM-5) or alcohol dependence (ICD-11).


Excessive alcohol use can damage all organ systems, but it particularly affects the brain, heart, liver, pancreas and immune system.
Alcoholism can result in mental illness, delirium tremens, Wernicke–Korsakoff syndrome, irregular heartbeat, an impaired immune response, liver cirrhosis and increased cancer risk.