Alcohol withdrawal syndrome is a set of symptoms that can occur when a person who has been drinking heavily suddenly reduces or stops their alcohol intake. Symptoms can range from mild to severe and may include anxiety, tremors, sweating, nausea, and insomnia. In some cases, withdrawal can lead to more serious complications, such as seizures or delirium tremens. The severity and duration of alcohol withdrawal syndrome can vary based on factors like the amount and duration of alcohol use, as well as individual health conditions. Medical supervision is often recommended during withdrawal to manage symptoms and prevent complications.