Hypoglycemia does not usually occur after abstinence from alcohol. Withdrawal symptoms can occur after abstinence from alcohol, which may include tremors, anxiety, restlessness, tachycardia, sweating, vomiting, nausea, delusions, and distorted vision, and usually last for 3 to 4 weeks. Hypoglycemia may be caused by an overdose of hypoglycemic drugs or by certain diseases, such as islet cell tumors. Risk factors for hypoglycemia include overexertion and poor eating habits. Hypoglycemic episodes can be characterized by hunger pangs, fatigue, and even life-threatening symptoms. After quitting drinking, you should consult a doctor in time to prevent hypoglycemia from recurring by keeping away from the bad triggers of hypoglycemia, so as to avoid adverse consequences.