Alcohol withdrawal can range from shakiness, anxiety, poor sleep, sweating, nausea, and a racing heart to seizures, hallucinations, and severe confusion. It is not possible to predict at home who will develop severe symptoms, so medical assessment matters before a person who drinks heavily stops suddenly.
Call 911 now for a seizure, severe confusion, hallucinations, trouble breathing, chest pain, an irregular or very fast heartbeat, severe vomiting, or thoughts of suicide or self-harm. Alcohol withdrawal can become life-threatening. If you need immediate support for a mental health or substance-use crisis, call, text, or chat 988.
What symptoms can happen when you stop drinking?
MedlinePlus says alcohol withdrawal may happen when a person who has been drinking too much alcohol regularly suddenly stops. Common symptoms include anxiety, depression, fatigue, irritability, shakiness, mood changes, nightmares, and trouble thinking clearly.
Other symptoms can include sweating or clammy skin, headache, insomnia, loss of appetite, nausea, vomiting, pale skin, a rapid heart rate, dilated pupils, and tremor. These symptoms can feel like anxiety, but anxiety is also one of the symptoms of withdrawal. A clinician can sort out withdrawal from anxiety and check for other medical causes.
| What may appear | What it can look like | What to do |
|---|---|---|
| Common withdrawal symptoms | Shakiness, anxiety, sweating, nausea, poor sleep, irritability, headache, rapid heart rate | Contact a clinician promptly, especially after regular heavy drinking. |
| Severe withdrawal symptoms | Hallucinations, seizures, sudden severe confusion, fever, irregular heartbeat | Call 911 or go to an emergency department. |
| Delirium tremens | Severe confusion, agitation, fever, hallucinations, seizures | This is an emergency and needs medical care. |
How long does alcohol withdrawal last?
MedlinePlus says symptoms often occur within eight hours after the last drink, though they can occur later. Symptoms commonly peak within 24 to 72 hours and may continue for weeks. Sleep changes, fast mood changes, and fatigue may last longer for some people.
The timing and severity vary. MedlinePlus notes symptoms can start days later and last for weeks, so a timeline should not be used to rule out severe symptoms.
Why can alcohol withdrawal become dangerous?
Alcohol slows activity in the central nervous system. With long-term heavy use, the brain adapts. When alcohol is suddenly removed, that adapted system can become overactive. MedlinePlus says alcohol withdrawal can cause delirium and seizures.
The most serious complication is delirium tremens. MedlinePlus describes it as severe withdrawal that can cause agitation, sudden severe confusion, fever, hallucinations, and seizures. A person may also have medical issues that look similar to withdrawal or make it more dangerous, including dehydration, infection, head injury, liver problems, heart problems, gastrointestinal bleeding, and electrolyte problems.
Who may be at higher risk for severe withdrawal?
SAMHSA TIP 45 says an assessment can include a person’s substance-use pattern, medical and psychiatric history, past detoxification, and seizure history. A past withdrawal seizure or delirium tremens is especially important to report.
MedlinePlus notes that withdrawal is more likely after drinking too much alcohol regularly, and that other medical problems can be linked with more severe symptoms. Be direct about alcohol use, prescribed medicines, and other substances when seeking care. That information helps the clinician choose the right setting and monitoring.
Is every heavy drinker dependent or likely to have withdrawal?
No. The CDC says most people who drink excessively do not have alcohol use disorder. Alcohol use disorder is a medical condition defined by problems with control, craving, and continued drinking despite harm; it can be mild, moderate, or severe, according to NIAAA.
Withdrawal is one possible sign, not a label for a person. NIAAA lists withdrawal symptoms such as trouble sleeping, shakiness, restlessness, nausea, sweating, a racing heart, feeling unwell, feeling low, seizures, or sensing things that are not there. A clinician can assess the full pattern without judgment.
What can be mistaken for alcohol withdrawal?
Withdrawal symptoms are not specific to alcohol. A clinician can check for other medical causes through an exam and tests, as MedlinePlus describes. That is another reason not to self-diagnose severe symptoms as “just anxiety” or “just detox.”
New confusion needs urgent medical assessment.
What does medical withdrawal management involve?
Withdrawal management is medical and psychological care during symptoms after a person reduces or stops substance use. The ASAM guideline describes assessment, monitoring, and clinician-selected medicines when needed. The setting can range from outpatient care with close follow-up to hospital-level care, depending on the person’s risks and symptoms.
MedlinePlus says moderate-to-severe alcohol withdrawal may require a hospital or a facility that treats alcohol withdrawal, where staff can monitor vital signs and watch for hallucinations and delirium tremens. Do not try to create your own detox schedule or change a prescribed medicine on your own. A clinician sets and supervises any plan.
Withdrawal management is an important first step, but it is not the same as ongoing treatment for alcohol use disorder. SAMHSA’s treatment options guide explains that treatment can combine clinician-directed medication and counseling or behavioral therapies, based on the person’s needs.
What is the fastest way to detox from alcohol?
The safest answer is not a fast home detox. Alcohol withdrawal can become severe without warning, and medical care is designed to assess risk, monitor symptoms, prevent complications, and connect the person to ongoing support. The SAMHSA TIP 45 guide describes detoxification as evaluation, stabilization, and connection to continuing treatment—not a one-time fix.
If you are worried about a current withdrawal or a planned quit attempt, call SAMHSA’s free, confidential, 24/7 National Helpline at 1-800-662-HELP (4357). You can also use FindTreatment.gov to locate treatment options.
Before you make a plan to stop drinking
- Tell a clinician how often you drink, when you last drank, whether you have had withdrawal before, and whether you have ever had a seizure, hallucinations, or severe confusion.
- Tell the clinician about prescribed medicines and other substances you use. Alcohol combined with some medicines can create extra risks; for a separate interaction question, see ED medication interactions.
- Ask what level of care fits your situation and how follow-up treatment will be arranged after withdrawal management.
- Call 911 for seizures, severe confusion, hallucinations, trouble breathing, chest pain, an irregular or very fast heartbeat, severe vomiting, or immediate danger to yourself or someone else.
For another medication-safety question involving a substance that may be used alongside alcohol, see the site’s CBD safety guide. It does not replace urgent care for alcohol withdrawal.
By SterlingMedicalCenter.org Editorial Team