Quick Summary
Delirium tremens (DTs) is the most severe form of alcohol withdrawal. It usually shows up 48 to 96 hours after the last drink, and it brings confusion, hallucinations, a racing heart and sometimes seizures. Only a small share of people who go through withdrawal, roughly 3 to 5 percent by one estimate, develop severe withdrawal, which includes DTs.[1] It is a medical emergency, but it is also treatable: StatPearls gives treated death rates from under 5 percent to 15 percent depending on the section and group, so read it as a range and not one rate, versus up to 37 percent without treatment in older data.[1] If you see the signs, call 911.
Key Takeaways
- DTs is not “bad shakes.” It is a change in brain function that causes confusion, hallucinations and unstable vital signs.
- The usual window is 48 to 96 hours after the last drink, but it can start later, and seizures often come earlier.[2]
- Having had DTs or a withdrawal seizure before is one of the strongest known warning signs for it happening again.[4]
- With hospital care, most people survive. The risk is highest when it is not treated or when other serious illness is present.[1][5]
- Never give someone more alcohol to calm withdrawal, and never plan to stop heavy drinking alone at home without talking to a clinician first.
What Delirium Tremens Is
After long, heavy drinking, the nervous system can swing into overdrive when alcohol stops suddenly. In the worst cases the result is delirium, a sudden, severe change in thinking and awareness. MedlinePlus describes DTs as a severe form of alcohol withdrawal involving sudden, severe mental or nervous system changes, and states plainly that it is a medical emergency.[2]
Ordinary withdrawal can mean anxiety, poor sleep, sweating, headache and shaky hands. With DTs the person may not know where they are, may see things that are not there, and may have a pulse and blood pressure that keep climbing.[1] Only a minority get this far: StatPearls reports that only about 3 to 5 percent of people with withdrawal symptoms develop severe withdrawal. The same page puts the lifetime risk of DTs among people with alcohol use disorder at 5 to 10 percent, so the rate depends on who is counted.[1] No assessment can predict DTs with certainty, but several risk factors raise the level of concern, which is why the list below matters.
The Withdrawal Timeline
Withdrawal timing varies from person to person, and symptoms can get worse after an early mild stretch. Treat these hours as a guide to what to watch for, not a promise.
| Time since last drink | What can happen |
|---|---|
| About 6 hours | Minor symptoms begin: anxiety, trouble sleeping, palpitations, headache, stomach upset.[1] |
| From about 6 hours, most common 12 to 48 hours | Withdrawal seizures. They can happen without any other symptoms and usually pass within 24 to 48 hours.[1][2] |
| After about 12 hours | Hallucinosis: seeing or hearing things, while still aware of the surroundings.[1] |
| 48 to 96 hours | The usual window for DTs.[2] It can begin as early as 48 hours and can last up to 5 days.[1] |
| Up to 7 to 10 days | DTs can start later than most people expect.[2] |
A seizure is not the same as DTs. Seizures usually come earlier, and they are their own emergency and a warning that things may get worse. Severe withdrawal can also get worse after an early period that looked mild. New or worsening confusion, hallucinations, a seizure, fever or an unstable heartbeat needs emergency care no matter how long it has been since the last drink.
Who Is at Higher Risk
MedlinePlus describes heavy daily drinking over several months as a risk factor and says DTs most commonly affects people who have used alcohol for more than 10 years. It also names a history of alcohol withdrawal, a head injury, an infection or other illness, and not eating enough during heavy drinking.[2] StatPearls adds prior DTs, prior seizures, older age, low potassium and other medical conditions.[1]
A systematic review and meta-analysis of hospitalized patients found that the best predictor of DTs or a withdrawal seizure was having had the same event before. Prior DTs raised the odds of DTs about two and a half times, and prior seizures raised the odds of a seizure about 2.8 times. Low platelet counts and low potassium also predicted DTs. The authors noted wide variation between studies, so treat these as signals, not predictions.[4]
If you or someone you love has had DTs or a withdrawal seizure before, do not detox without medical care.
Early Warning Signs and DT Signs
Early warning signs
- Anxiety, restlessness, poor sleep, shaky hands, sweating, nausea
- A seizure at any point after stopping or cutting back
- Seeing or hearing things that are not there, even briefly. This is an emergency warning sign. It does not mean DTs by itself, but it is a reason to get medical care right away
Signs of DTs
- Confusion that is sudden and severe: not knowing the date, the place or who people are
- Vivid hallucinations, fear or paranoia
- Fever, heavy sweating, fast heart rate, high blood pressure[1]
- Extreme agitation, or the opposite: stupor or deep sleep lasting a day or longer[2]. A person who is very hard to wake needs 911 and an emergency evaluation, because other emergencies can look the same
When someone starts to turn, it usually doesn’t look dramatic at first. They get restless, can’t sleep, shake, and say they just feel off, and families tend to write it off as a rough night. The sign that matters is a change in thinking: confusion, not knowing where they are, or seeing things that aren’t there. That is when you call 911 and don’t wait until morning.
Donnita Smart, LCDC
Why DTs Is an Emergency
DTs strains the whole body at once: fast heart rate, high blood pressure and fever. People can become severely dehydrated.[1] StatPearls also lists low blood sugar, low magnesium and low phosphate among the abnormalities that can occur and that clinicians check for.[1] MedlinePlus lists dangerous heart rhythm problems, seizures, and injuries from falls or confusion as complications.[2]
The figures below come from different groups of patients, so they cannot predict what will happen to one person. Hospital, trauma and older historical estimates answer different questions and should not be added together.
- Treated in a hospital: StatPearls says early treatment reduces the death rate to under 5 percent in one section, and gives a range of 5 to 15 percent even with appropriate therapy in another, so the true figure varies by group and era.[1] A recent US study of 267,375 hospital stays from 2017 to 2022 with DTs as the main diagnosis found in-hospital deaths in 0.28 percent of patients without acute kidney injury and 2.23 percent of patients with it.[5]
- Treated but seriously ill or injured: in a study of trauma patients who developed DTs, 11.1 percent died, compared with 4 percent or less in other withdrawal severity groups.[6] That is a small, specific group, not a general rate.
- Not treated: StatPearls cites up to 37 percent. This is an older figure, and StatPearls does not tie it to one defined group of patients, so read it as “this used to be deadly,” not as a current prediction.[1]
The takeaway: most people who reach a hospital in time survive DTs. Delayed care can let complications get worse, and another serious problem, such as kidney injury or major injury, raises the danger.
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How DTs Is Treated
DTs is treated in a hospital, often with monitoring of blood tests, fluids and vital signs. The main pieces:
- Benzodiazepines are the first-line medicine. A review of managing withdrawal in critically ill patients describes them as the most studied and often preferred first-line agents. Some hospitals give them on a symptom-triggered basis, meaning treatment is guided by how the person is doing, and others use fixed or loading schedules, and the sickest patients may need intensive care. The team chooses based on how severe the symptoms are and how the person responds.[3] StatPearls says this generally uses less medicine over a shorter course.[1]
- Other medicines when benzodiazepines are not enough. Some people do not respond to usual benzodiazepine treatment. The critical care literature describes adding other agents, including phenobarbital and dexmedetomidine, in those cases. The treating team decides which.[1][3]
- Fluids and electrolytes to replace what was lost.[1]
- Thiamine (vitamin B1). StatPearls notes that multivitamins and thiamine should be supplemented before glucose is given, to help prevent Wernicke encephalopathy, a serious brain condition linked to heavy drinking. The hospital team decides the order and timing, and low blood sugar is treated promptly when it is present. We cover that in our Wernicke’s encephalopathy article.[1]
- Close monitoring, sometimes in an intensive care or step-down unit.[1]
Our Ennis and Waxahachie detox programs provide around-the-clock medical supervision, so people going through alcohol withdrawal are not left to manage it alone.
Donnita Smart, LCDC
What to Do Right Now
If you are looking at someone who may have DTs or has had a seizure: call 911. Do not wait to see if it passes. Do not give them alcohol. Stay with them until help arrives.
What to tell the 911 operator or the ER team:
- When they had their last drink, and roughly how much and how long they have been drinking
- Any past DTs or withdrawal seizures
- All medications they take, plus any other drugs or sedatives
- Any recent head injury, illness or not eating
If you are planning to stop drinking after heavy, regular use: talk to a doctor or a medical detox program before you stop. If you have had DTs or a withdrawal seizure before, medical supervision is not optional.
When to Reach Out for Help
Get help if you or someone you love drinks heavily most days and wants to stop, or gets shaking, sweating or panic when cutting back.
Call 911 right away for: a seizure, hallucinations, severe confusion, a very fast heartbeat with fever, or any thought that the person is in danger.
Talking With a Professional
Before detox, tell a clinician how long and how much you have been drinking, what happened in past attempts to stop, and what medications you take. If you would like to talk through medical detox options, Discovery Point Retreat’s admissions team can explain detox options and answer insurance questions. You can read more about our detox program and how insurance coverage works.
Frequently Asked Questions
Can delirium tremens happen after one binge?
It is much less likely. The risk factors MedlinePlus lists center on heavy drinking over months or years and a history of withdrawal.[2] Still, anyone who has a seizure or hallucinations while withdrawing needs medical care, however long they have been drinking.
How long does delirium tremens last?
StatPearls says it can begin as early as 48 hours after stopping and can last up to 5 days.[1] Some milder symptoms, such as poor sleep and mood swings, can last much longer.[2]
Can you get through delirium tremens safely at home?
No. DTs needs hospital-level monitoring, fluids, electrolyte correction and medicine adjusted as symptoms change.[1][2] If someone is confused, hallucinating or has had a seizure, call 911 instead of waiting.
Can delirium tremens be prevented?
Medical supervision lets a team treat early symptoms as they appear instead of after they escalate.[3] Telling your doctor about past DTs or seizures matters a lot, because that history is one of the strongest known warning signs.[4]
Is DTs only a risk for people who drink all day?
No, though heavy daily drinking over a long time carries the highest risk.[2] Other things raise the risk too, including past withdrawal, older age, other illness or injury, low potassium and not eating.[1][2]
References
- Rahman A, Paul M. Delirium Tremens. StatPearls (last updated August 14, 2023). Accessed October 2026. ncbi.nlm.nih.gov
- Brodkey FD, Dugdale DC. Delirium tremens. MedlinePlus Medical Encyclopedia, National Library of Medicine (reviewed January 1, 2025). Accessed October 2026. medlineplus.gov
- Dixit D, Endicott J, Burry L, et al. Management of Acute Alcohol Withdrawal Syndrome in Critically Ill Patients. Pharmacotherapy. 2016;36(7):797-822. Accessed October 2026. pubmed.ncbi.nlm.nih.gov/27196747
- Goodson CM, Clark BJ, Douglas IS. Predictors of severe alcohol withdrawal syndrome: a systematic review and meta-analysis. Alcohol Clin Exp Res. 2014;38(10):2664-2677. Accessed October 2026. pubmed.ncbi.nlm.nih.gov/25346507
- Truong T, Zuniga Veliz R, Gallego-Navarro C, et al. Association of acute kidney injury with in-hospital outcomes among patients with delirium tremens: a national retrospective study. Proc (Bayl Univ Med Cent). 2026. Accessed October 2026. pubmed.ncbi.nlm.nih.gov/42683912
- Salottolo K, McGuire E, Mains CW, et al. Occurrence, Predictors, and Prognosis of Alcohol Withdrawal Syndrome and Delirium Tremens Following Traumatic Injury. Crit Care Med. 2017;45(5):867-874. Accessed October 2026. pubmed.ncbi.nlm.nih.gov/28266937
Related Reading
- Medical Detox at Discovery Point Retreat
- Alcohol Withdrawal: Symptoms, Timeline and Treatment
- The Best Ways to Detox From Alcohol
- Wernicke’s Encephalopathy and Alcohol Withdrawal
- Alcohol and the Liver
- Protracted Withdrawal: When Symptoms Last Months After Detox
- Sleep Disruption During Withdrawal: Why You Can’t Sleep and What Helps
- Dry Drunk Syndrome and Risks
Resources
- 988 Suicide and Crisis Lifeline: call or text 988
- SAMHSA National Helpline: 1-800-662-4357 (free, confidential, 24/7)
- Emergency: call 911
This article is general education and is not medical advice.
If you or someone you love is ready to stop drinking safely, Call Discovery Point Retreat at (855) 245-7133.
