What can be initial signs of alcoholism?

Functioning: Impairment in functioning is the real key to a problem, as well as problems with one's family and relationships, problems on the job or with someone's work, marital problems, isolating and drinking alone, anger outbursts, alcohol withdrawal like shakes and tremors, drinking in the morning, history of duis, history of blackouts, problems with the law, spending too much on alcohol & health problems.