A hangover is a group of unpleasant physical and mental symptoms that occur after consuming too much alcohol. The severity of hangover symptoms may depend on the amount and type of alcohol consumed.
Common Hangover Symptoms
Recap Headaches, thirst, sensitivity to light, irritability, and stomach upset are common hangover symptoms.
Severe Hangover Symptoms
Excessive alcohol consumption can lead to acute alcohol poisoning, a life-threatening condition. Symptoms of alcohol poisoning may include:
If you observe any of these symptoms in someone who has been drinking, call 911 immediately. Stay with the person, turn them on their side to prevent choking on vomit, and perform CPR if they stop breathing.
Intensity and Duration of Hangover Symptoms
The severity and duration of hangover symptoms can vary among individuals and occasions. Factors contributing to this variation include:
Hangover symptoms usually begin within several hours after drinking and peak when blood alcohol concentration (BAC) returns to zero. Symptoms can last from a few hours to up to 24 hours.
When Hangover Symptoms Become a Problem
Frequent hangover symptoms or symptoms that interfere with daily life at school or work may indicate an alcohol use disorder. Continuing to drink despite negative consequences is a sign of alcohol use disorder.
Chronic, heavy alcohol use can lead to various health problems, such as digestive issues, cardiovascular disease, liver disease, weakened immunity, neurological issues, bone damage, and increased cancer risk.
Seeking Assistance If you or a loved one is struggling with substance use or addiction, contact the Substance Abuse and Mental Health Services Administration (SAMHSA) National Helpline at 1-800-662-4357 for information on support and treatment facilities in your area. For additional mental health resources, refer to the National Helpline Database.