Deciding to stop drinking is a serious step, and for anyone who has been drinking heavily or regularly, it’s worth knowing what the body may go through in the days that follow. Alcohol withdrawal symptoms can start within hours of the last drink, and while many people experience manageable discomfort like shaking, sweating, anxiety, nausea, or insomnia, the course isn’t always predictable. In some cases, symptoms can escalate to seizures, hallucinations, or severe confusion, which are medical emergencies.
That unpredictability is exactly why anyone at risk of withdrawal should talk to a healthcare professional before stopping abruptly. If you or someone you’re with experiences a seizure, severe confusion, hallucinations, fever, or an irregular heartbeat, call 911 or go to the nearest emergency department right away.
If you are ready to stop drinking but think you might need help detoxing, call 605-600-5149. We answer 24/7.
What Are Alcohol Withdrawal Symptoms?
Alcohol withdrawal syndrome can develop when someone who has been drinking heavily or regularly stops or significantly reduces their alcohol intake. Long-term alcohol exposure changes how the nervous system functions. When alcohol is suddenly removed, the nervous system may become overactive.
Common alcohol withdrawal symptoms include:
- Shaking or hand tremors
- Anxiety, restlessness, or irritability
- Sweating
- Headache
- Nausea or vomiting
- Difficulty sleeping
- Rapid heart rate
- Elevated blood pressure
- Difficulty thinking clearly
Symptoms vary widely. Mild symptoms at the beginning do not guarantee that the rest of the withdrawal period will remain mild. The American Society of Addiction Medicine notes that symptoms can escalate quickly and do not always occur in a predictable order.
Alcohol Withdrawal Timeline After the Last Drink
The alcohol withdrawal timeline is measured from the last drink or a major reduction in alcohol use. These timeframes are estimates, not a way to predict exactly what will happen to one person.
Approximately 6 to 24 Hours
Early symptoms often begin during this period. A person may experience shaky hands, anxiety, sweating, nausea, headache, insomnia, restlessness, a rapid pulse, or elevated blood pressure.
Some people may develop withdrawal symptoms after reducing their alcohol intake, even if they have not completely stopped drinking.
Approximately 12 to 48 Hours
Early symptoms may persist or intensify. Hallucinations can sometimes appear within 12 to 24 hours. These may involve seeing, hearing, or feeling things that are not present.
Alcohol withdrawal seizures can occur as early as eight hours after the last drink and may remain a risk for up to 48 hours. A seizure can happen without a gradual progression through other withdrawal stages.
Approximately 48 to 96 Hours
Severe alcohol withdrawal may develop during this period. Possible symptoms include severe agitation, disorientation, fever, hallucinations, heavy sweating, and significant changes in heart rate or blood pressure.
Alcohol withdrawal delirium, historically called delirium tremens or DTs, is the most serious form of withdrawal. It can cause severe confusion, agitation, hallucinations, fever, and seizures. This is a medical emergency.
After the First Few Days
Many acute physical symptoms begin improving after several days. Sleep problems, fatigue, anxiety, mood changes, difficulty concentrating, and cravings may continue longer.
The duration depends on the person’s drinking history, previous withdrawal experiences, physical health, medications, other substance use, and response to treatment.
When Is Medical Detox Necessary for Alcohol Withdrawal?
Medical detox provides clinical monitoring and treatment during withdrawal. It may be needed when a person has moderate or severe symptoms or an increased risk of complications.
Symptoms That Require Emergency Help
Call 911 or go to an emergency department immediately if someone experiences:
- A seizure
- Severe confusion or disorientation
- Hallucinations
- Fever
- An irregular heartbeat
- Loss of consciousness
- Severe agitation or an inability to respond normally
Not everyone withdrawing from alcohol will reach this point, but certain factors make it more likely. Knowing those risk factors ahead of time can help determine whether outpatient monitoring is enough or whether medical detox is the safer starting point.
Risk Factors That May Indicate a Need for Medical Detox
A clinical assessment is especially important when a person has:
- A previous alcohol withdrawal seizure or delirium tremens
- Experienced multiple prior withdrawal episodes
- A long history of heavy or regular drinking
- Current moderate or severe withdrawal symptoms
- Significant medical or psychiatric conditions
- Dependence on benzodiazepines, barbiturates, or similar medications
- Concurrent use of other substances
- Limited support or no safe environment for outpatient monitoring
Age, overall health, nutrition, and medications can shift that risk as well, which is why mild symptoms at the outset are never a guarantee that the rest of withdrawal will stay mild. A healthcare professional needs to weigh both what’s happening right now and how likely things are to get worse before ruling out medical detox.
What Happens During Medical Detox?
Being unsure about what happens in medical detox can deter people from seeking help. At Buffalo Plains Recovery, ourconfidential admissions process begins with a conversation about alcohol use, previous withdrawal, medications, physical health, mental health, and immediate safety concerns. This helps our team determine the clinically appropriate starting level of care.
Ourmedical detox program in South Dakota provides 24/7 nursing and clinical supervision at our Fairlane Drive facility in Rapid City. During detox, our team monitors vital signs and physical and psychological symptoms. Medications may be used when clinically appropriate to reduce symptoms and help prevent serious complications.
Stays typically range from three to eight days, though the exact length depends on the person’s health, drinking history, symptoms, and how they respond to care. Detox won’t necessarily be symptom-free, but the goal isn’t comfort alone, it’s stabilization in a setting where any complications can be caught and treated right away, so the person is ready for the next step in treatment.
What Comes After Alcohol Detox?
Detox addresses immediate withdrawal and physical stabilization, but it does not treat every part of alcohol use disorder. ASAM emphasizes that withdrawal management should be connected to ongoing treatment.
After stabilization, the next recommendation may includeresidential addiction treatment in South Dakota, partial hospitalization, intensive outpatient treatment, or another level of support.
At Buffalo Plains Recovery, that transition doesn’t mean starting over. The same clinical team that oversees detox is involved in shaping the next step, so nothing gets lost between stabilization and ongoing treatment, no retelling your history to a new provider, no gap in care while you wait for a referral to go through. That continuity can make all the difference when someone is already running low on the energy it takes to ask for help.
Ready to Talk to Someone About Alcohol Withdrawal?
If you’re worried about withdrawal, whether it’s for yourself or someone you care about, you don’t have to figure out the risk level on your own. Buffalo Plains Recovery is the only licensed non-hospital medical detox in western South Dakota, and our admissions team can walk through your drinking history, current symptoms, and any safety concerns to help determine whether medical detox is the right starting point.
Call Buffalo Plains Recovery at 605-600-5149 to discuss your concerns, our confidential admissions process, and current admission availability. If severe symptoms are already occurring, call 911 or go to the nearest emergency department.
Alcohol Withdrawal FAQs
Can Alcohol Withdrawal Symptoms Begin After Cutting Down?
Yes. Withdrawal can begin after a significant reduction in alcohol intake, not only after a person stops completely. This surprises a lot of people who assume tapering off on their own is automatically safer than quitting outright. Anyone who has been drinking heavily or regularly should talk to a healthcare professional before making any sudden change, even a partial one.
How Long Do Alcohol Withdrawal Symptoms Last?
Acute symptoms often begin within the first day and may peak over the next several days, typically easing within a week for most people. But sleep disruption, anxiety, fatigue, mood changes, and cravings can linger well beyond that, sometimes for weeks. How long any of it lasts depends on someone’s drinking history, overall health, and how their body responds to care.
Is It Safe to Detox From Alcohol at Home?
It depends entirely on the person’s risk factors. Mild symptoms don’t rule out the possibility of a more serious complication developing later, and seizures or delirium can occur without warning. Anyone with a history of heavy or prolonged drinking, prior withdrawal, or other health conditions should be medically assessed before attempting to stop without supervision.
What’s the Difference Between Alcohol Withdrawal and Delirium Tremens?
Withdrawal refers to the full range of symptoms, mild to severe, that can occur when alcohol use stops or drops significantly. Delirium tremens (DTs) is the most severe form, marked by severe confusion, hallucinations, fever, and seizures. Not everyone who goes through withdrawal will experience DTs, but it’s a medical emergency when it happens.
Do I Need Medical Detox If My Symptoms Feel Mild So Far?
Not necessarily, but mild symptoms early on don’t guarantee the rest of withdrawal will stay mild. That’s why a clinical assessment matters even when things feel manageable at first. A healthcare professional can weigh your history and risk factors, not just how you feel in the moment.
Sources
- American Society of Addiction Medicine. (2020). The ASAM clinical practice guideline on alcohol withdrawal management. https://www.asam.org/quality-care/clinical-guidelines/alcohol-withdrawal-management-guideline
- MedlinePlus. (2025, January 1). Alcohol withdrawal. U.S. National Library of Medicine. https://medlineplus.gov/ency/article/000764.htm
- National Institute on Alcohol Abuse and Alcoholism. (2025, May 8). Alcohol use disorder: From risk to diagnosis to recovery. https://www.niaaa.nih.gov/health-professionals-communities/core-resource-on-alcohol/alcohol-use-disorder-risk-diagnosis-recovery
