Medically reviewed by Mitchell Naficy, MD, Medical Director at Tru Dallas Detox & Recovery Center (Texas Medical Board license W1860). Reviewed October 2026.
Short answer: alcohol withdrawal usually starts 6 to 24 hours after the last drink, peaks around 24 to 72 hours, and eases for most people within about 5 to 7 days. The most dangerous complications, seizures and delirium tremens (DTs), tend to appear between day 1 and day 4. How hard withdrawal hits depends on how much and how long you have been drinking, your health, and whether you have been through withdrawal before.
a seizure, severe confusion or disorientation, hallucinations, a high fever, chest pain, or cannot stay awake. These can be signs of delirium tremens or another medical emergency.
About half of people with alcohol use disorder have withdrawal symptoms when they stop or sharply cut back. This guide walks through what typically happens at each stage, which symptoms are warning signs, and how medical detox makes the process safer.
Alcohol withdrawal timeline at a glance
| Time since last drink | What can happen |
|---|---|
| 6 to 12 hours | Shakiness, sweating, anxiety, nausea, headache, poor appetite, insomnia, racing heart |
| 12 to 24 hours | Symptoms build; some people develop alcoholic hallucinosis (seeing, hearing or feeling things that are not there) while still alert |
| 24 to 48 hours | Highest risk of withdrawal seizures; symptoms often peak |
| 48 to 96 hours | Delirium tremens can begin in people at risk: severe confusion, agitation, fever, hallucinations |
| Days 4 to 7 | For most people, physical symptoms ease and sleep and appetite start to return |
| Weeks to months | Lingering insomnia, fatigue, anxiety, low mood and cravings in some people |
Sources: American Family Physician (2021) and MedlinePlus. Every person is different, and symptoms can start earlier or later than shown.
Stage 1: 6 to 24 hours after the last drink
The first symptoms often appear while there is still some alcohol in the blood. The brain has adapted to alcohol slowing it down, so when alcohol is removed, the nervous system becomes overexcited. Common early symptoms are:
- Shaky hands (tremor)
- Sweating and a fast heartbeat
- Anxiety, irritability and restlessness
- Nausea, vomiting and stomach upset (see abdominal pain during withdrawal)
- Headache and trouble sleeping
Between about 12 and 24 hours, some people develop alcoholic hallucinosis: seeing, hearing or feeling things that are not there, while otherwise knowing where they are. It usually clears within 48 hours, but it needs medical attention because it can be confused with, or come before, more serious problems.
Stage 2: 24 to 72 hours, when risk peaks
This is the window that worries clinicians most. Withdrawal seizures most often happen 24 to 48 hours after the last drink, and they can occur without any other warning. Symptoms such as tremor, sweating, blood pressure and anxiety usually reach their peak in this period too.
Delirium tremens most often starts 48 to 96 hours after the last drink, and occasionally later. It causes sudden, severe confusion, agitation, hallucinations, fever, heavy sweating and a racing heart. DTs is a medical emergency that can be fatal without treatment. It is most likely in people who drink heavily every day, have been drinking for many years, or have had DTs or withdrawal seizures before.
Stopping suddenly after heavy, daily drinking is what triggers this stage. Read more about the dangers of quitting alcohol cold turkey.
Stage 3: days 4 to 7, symptoms ease
For most people who do not develop complications, physical symptoms start to settle by the end of the first week. Appetite returns, the shakes fade and sleep slowly improves. If delirium tremens develops, its symptoms can peak around day 5 and take longer to clear, which is another reason to be in a medical setting during the first week.
After the first week: lingering symptoms
Some symptoms can last for weeks or longer after acute withdrawal is over, including insomnia, fatigue, anxiety, irritability, low mood and cravings. Some people also notice skin symptoms such as itching. These lingering effects are a common reason people drink again, and they are a big part of why treatment does not stop at detox.
What makes withdrawal more severe
Medical guidelines flag these factors as raising the risk of severe or complicated withdrawal:
- Drinking heavily every day, especially more than about 8 drinks a day
- A history of withdrawal seizures or delirium tremens
- Several previous withdrawal episodes
- Being over 65, or having other medical conditions
- Active mental health conditions
- Dependence on other sedatives, such as benzodiazepines, or on opioids
- No one at home to help, or unstable housing
If any of these apply, withdrawal should happen under medical supervision.
Worried about withdrawal? Tru Dallas Detox offers 24/7 medically supervised detox and residential treatment in Euless, between Dallas and Fort Worth. Calls are free and confidential.
How medical detox changes the timeline
Medical detox does not make withdrawal disappear, but it makes it safer and much more manageable. In a supervised setting, nurses check symptoms and vital signs around the clock, often using a standard scale called the CIWA-Ar, and physicians adjust treatment as symptoms change.
According to the American Academy of Family Physicians, benzodiazepines are the first-line medication for moderate to severe alcohol withdrawal, because they calm the overexcited nervous system and lower the risk of seizures and DTs. Thiamine (vitamin B1) is typically given to protect the brain. Read more about medications for alcohol withdrawal and how a Librium taper works.
At Tru Dallas, alcohol detox happens under 24/7 medical supervision in Euless, between Dallas and Fort Worth. Once you are stable, you can move straight into residential alcohol rehab in the same building, which is where the work on cravings, sleep and relapse prevention continues.
Frequently asked questions
How long does alcohol withdrawal last?
For most people, the worst symptoms happen in the first 24 to 72 hours and improve within about 5 to 7 days. Delirium tremens, if it develops, usually starts 2 to 4 days after the last drink. Sleep problems, low mood and fatigue can linger for weeks or longer.
When does alcohol withdrawal start?
Usually within 6 to 24 hours of the last drink, sometimes while there is still alcohol in the blood. Early signs include shakiness, sweating, anxiety, nausea, headache and trouble sleeping.
When is the risk of seizures highest?
Withdrawal seizures most often happen 24 to 48 hours after the last drink, although they can occur earlier. A seizure can be the first sign of severe withdrawal, which is why the first two days matter so much.
What day is the worst for alcohol withdrawal?
For many people, days 2 and 3. That is when symptoms usually peak and when delirium tremens can begin in people at risk.
Can you detox from alcohol at home?
It is risky if you drink heavily every day, have had seizures or delirium tremens before, have other medical or mental health conditions, or use other sedatives. Those factors raise the risk of severe withdrawal, and medical guidelines recommend supervised detox for them.
Last updated: October 2026. This page is general information, not medical advice. If you are worried about withdrawal, talk to a doctor or call us. Sources: Alcohol Withdrawal Syndrome: Outpatient Management, American Family Physician, 2021; Delirium tremens, MedlinePlus Medical Encyclopedia.
