Or maybe you have been watching someone you love struggle to cut back, and you are trying to understand what alcohol withdrawal might actually look like and whether it is safe, or how long it usually lasts.
Knowing what the symptoms are, when they appear, and when to act is what this article is for.
What Is Alcohol Withdrawal & How Common Is It?
Alcohol withdrawal is what happens when someone who has been drinking heavily for a prolonged period suddenly stops or significantly reduces their intake.
The body has grown used to alcohol being present, and when it is removed, it reacts. That reaction is withdrawal.
Not everyone who stops drinking will experience withdrawal. The likelihood depends on how much you have been drinking, for how long, and factors specific to your health history. But if you drink heavily every day, withdrawal is something you are very likely to face.
Read Also: Alcohol and the Human Body: What Really Happens Inside
14 Alcohol Withdrawal Symptoms & When Each One Appears
Mild symptoms
- Headache: Often one of the earliest signs, usually appearing within the first six hours.
- Anxiety & Irritability: You may feel restless, tense, or constantly on edge in a way that feels different from ordinary stress. This happens because your nervous system is genuinely overactive.
- Insomnia: You may have trouble falling asleep or staying asleep, even when you feel exhausted. Sleep problems can continue long after the acute withdrawal phase has ended.
- Sweating: You may sweat more than usual, and some people wake up sweating during the night.
- Nausea and poor appetite: Stomach related symptoms usually settle within the first 48 hours for most people.
- Tremor: Shaking hands are one of the most recognisable early signs of alcohol withdrawal. Tremors can also affect your voice and other parts of your body.
Moderate symptoms
- Rapid heart rate: Your heart may start beating faster as your nervous system becomes overactive. This is known as tachycardia.
- Elevated blood pressure: Blood pressure can rise during alcohol withdrawal, which may increase the risk of serious complications such as stroke or heart attack.
- Fever: A raised body temperature can be a sign that withdrawal is becoming more severe and that medical attention is needed.
- Confusion: You may have difficulty thinking clearly, feel disoriented, or struggle to follow a conversation.
Severe Symptoms that Require Medical Attention
- Hallucinations: You may see, hear, or feel things that are not actually there. These most often appear 12 to 24 hours after the last drink. In many cases, they resolve without developing into full delirium tremens. However, they can also be a warning sign that withdrawal is becoming more severe.
- Seizures: Seizures can occur during alcohol withdrawal, with the risk being highest around 24 to 48 hours after the last drink. A seizure is a medical emergency. If someone is having a seizure, call 000.
- Delirium tremens (DT): The most severe form of alcohol withdrawal. It can involve intense confusion, severe agitation, high fever, a rapid heart rate, and hallucinations occurring together. It usually develops 48 to 72 hours after the last drink and is a medical emergency.
- Prolonged mood and sleep disruption: Even after the acute withdrawal phase has ended, anxiety, low mood, and sleep problems can continue for weeks or months. This is covered in the section below on what happens after withdrawal ends.
Symptoms do not all appear at once. The timeline below reflects what is commonly seen in clinical settings, but alcohol withdrawal does not follow an exact script. The timing and severity can vary considerably from person to person, particularly after the acute phase.
| Phase | When | What some people experience |
| Early | First 6–24 hours after the last drink | Milder symptoms often appear first, such as headache, shakiness, sweating, nausea, and difficulty sleeping. |
| Peak | 24–72 hours | Symptoms are often at their most intense during this time. This is also when the risk is highest for people with severe alcohol dependence. |
| Settling | After 72 hours | For many people, the most intense symptoms begin to ease. However, some symptoms, particularly poor sleep, anxiety, and mood changes, can continue for weeks. |
(Sources: Cleveland Clinic, Alcohol Withdrawal, January 2024; SA Health, Alcohol Withdrawal Management, August 2026)
Read Also : Alcoholism and Recovery: Understanding the Journey Back to Self
What Causes Alcohol Withdrawal & Can It Be Prevented?
Drinking heavily over a long period can change the way your body functions. Over time, your body adjusts to having alcohol in your system and essentially learns to function around it.
When you suddenly stop drinking, your body has not had time to adjust to functioning without alcohol. This period of adjustment, as your body works to return to its normal state, is what causes withdrawal symptoms.
Generally, the heavier and longer you have been drinking, the more difficult that adjustment can be.
Who is most at risk of more severe withdrawal?
The risk is not the same for everyone. However, certain factors can make more severe withdrawal more likely:
- Drinking heavily every day, meaning five or more drinks per day for men or four or more for women
- Drinking at this level for more than two weeks without a significant break
- Having your first drink in the morning to manage how you feel
- Having experienced severe withdrawal in the past
- Having a history of withdrawal seizures or delirium tremens
- Being over 65
- Having other health conditions, including liver disease, heart disease, or significant mental health conditions
Can Alcohol Withdrawal be Prevented?
Once alcohol dependence has developed, withdrawal cannot necessarily be prevented.
However, you can manage how severe the symptoms become and, most importantly, reduce the risks associated with withdrawal.
Medical supervision or rehabilitation does more than make withdrawal more comfortable. It can help reduce the risk of serious complications and ensure that you receive appropriate care if symptoms become severe.
