"alcohol dependence", consists of observing the presence, in the time period of 12 months, of three of the seven criteria:
1. Alcohol tolerance – progressive decrease in the desired effect at the same doses;
2. Abstinence syndrome – two or more of the following symptoms, caused by cessation or reduction of consumption from a chronic use: tremor of extremities, autonomic system overactivity (profuse sweating, tachycardia), insomnia, nausea or vomiting, hallucinations, psychomotor agitation, anxiety;
3. Alcohol consumption for a longer period of time than desired;
4. Persistent desire, coupled with the inability to give up drinking;
5. Spending disproportionate amount of resources, time and energy to buy alcohol or to recover after consumption;
6. The presence of negative effects (social, professional) of drinking;
7. Continued use despite awareness of harmful (somatic and psychological) consequences of alcohol.
Took that from one of my clinical psychology books.