Withdrawal symptoms usually occur after 1-2 weeks of abstinence from alcohol, but can last up to 1 month for some patients with severe alcohol dependence. Withdrawal symptoms mainly include involuntary tremor of the hands and eyes, nausea, vomiting, insomnia, elevated blood pressure and emotional instability. Some patients also experience delirium symptoms, which are characterized by blurred consciousness, inability to distinguish directions, not recognizing people, not knowing where they are, and even various hallucinations. Withdrawal symptoms can be relieved by some treatments, such as the use of benzodiazepines. Patients who experience hallucinations and delusional symptoms can be treated briefly with antipsychotic drugs. Withdrawal symptoms are generally more pronounced in patients who have been drinking alcohol for a long time, and the chances of relapse are high during the first 2 weeks of withdrawal symptoms. The key to successful abstinence is not to drink again during this time. Alcohol dependence patients are advised to go to a regular medical institution in time for standardized treatment under the guidance of a professional doctor.