Alcohol Withdrawal Timeline: Symptoms Day by Day

Alcohol withdrawal doesn't hit all at once. It moves in a fairly predictable pattern, though the severity and exact timing vary based on how much and how long someone has been drinking. Here's what that progression typically looks like, and where the real danger points are.

6 to 12 hours after the last drink

Early symptoms can begin within hours of the last drink, though exact timing varies by person: anxiety, shaky hands, sweating, nausea, headache, and trouble sleeping. Blood pressure and heart rate often climb. This stage is typically less severe than later phases, but withdrawal severity can progress, so it should not be assumed to stay mild.

12 to 24 hours

Symptoms typically intensify. Some people experience alcoholic hallucinosis, a state where they see, hear, or feel things that aren't there while otherwise remaining alert and oriented. This is distinct from delirium tremens and generally resolves within 24 to 48 hours, but it's still a sign that withdrawal needs medical attention.

24 to 48 hours

This window carries the highest risk of withdrawal seizures, typically generalized tonic-clonic seizures that can occur even in people with no prior seizure history. Anyone with a history of heavy, sustained drinking is at meaningfully elevated risk during this period. This is one of the clearest reasons medical monitoring matters in the first two days.

48 to 96 hours

For a smaller percentage of people, this is the window when delirium tremens (DTs) can set in: severe confusion, agitation, fever, rapid heartbeat, and vivid hallucinations. Onset can occur as early as 48 hours after the last drink and, in some cases, later within this window; timing is not exact and varies by person (see sources below). DTs is a medical emergency requiring immediate treatment. Left untreated, it carries a meaningful mortality risk. Clinical sources describe early recognition and treatment as strongly associated with better outcomes.

If you or someone nearby shows signs of a seizure, severe confusion, hallucinations, high fever, or an irregular/racing heartbeat during withdrawal, treat it as a medical emergency: call 911 or go to the nearest emergency room. Do not wait to see if it passes.

Days 4 through 7

For many people who move through the acute phase without a severe complication, symptoms begin easing around this point. Sleep, appetite, and mood commonly start to stabilize, though the pace varies and is not always a straight line. Anyone still experiencing severe symptoms at this stage should be evaluated by a clinician, not assume they're on the standard timeline.

Weeks 2 to several weeks: protracted withdrawal

Some people experience a longer tail of symptoms, sometimes called post-acute withdrawal syndrome: mood swings, sleep disruption, anxiety, and cravings that can persist for weeks after the acute phase ends. This is one reason detox alone isn't considered a complete treatment; it's the first step, typically followed by structured treatment such as outpatient or residential care.

Why timing matters for safety

The two most dangerous windows described in the clinical literature are roughly 24 to 48 hours (seizure risk) and 48 to 96 hours (DTs risk), though both can vary by individual. That's the core reason medical detox exists: a program with clinical staff on-site is positioned to catch a seizure or the early signs of DTs and respond quickly, rather than someone discovering during an unsupervised withdrawal that it has become a medical emergency. Read more about what that supervision actually involves on our Medically Supervised Alcohol Detox page, or about detox safety more broadly on Is Alcohol Detox Dangerous?.

If you're trying to figure out where to start, our Alcohol Detox Near Me page covers how to find and access a medically supervised program in Texas.

Sources

This timeline reflects the general clinical progression described in the sources below, which do not fully agree on exact hour ranges for DTs onset. This page uses a representative range consistent with that source set. This is educational information, not a substitute for a medical evaluation. If you or someone you know is currently withdrawing from alcohol, especially after heavy or prolonged drinking, seek medical evaluation rather than relying on a timeline to predict what will happen.