Delirium Tremens: Symptoms, Timeline and What to Do
The short answer
Delirium tremens, often called DTs, is a life-threatening form of alcohol withdrawal. It can cause confusion, severe agitation, hallucinations, fever, heavy sweating, shaking and a rapid pulse. Symptoms commonly begin 48 to 72 hours after stopping or sharply reducing alcohol. Suspected DTs requires emergency hospital care. Call 911 rather than trying to manage it at home.
The first day without alcohol can be falsely reassuring. A person may have only shaky hands, nausea or poor sleep, then become confused or start seeing things two or three days after the last drink. That delayed change is one reason DTs can be missed.
Our aim here is practical: help you recognize the emergency, understand the timing and know what to do next. If you drink heavily or regularly and may be physically dependent, get medical advice before stopping or making a sharp reduction.
What is delirium tremens?
Delirium tremens is the most dangerous form of alcohol withdrawal. It involves delirium, meaning a sudden and fluctuating disturbance in attention, awareness and thinking, along with severe physical withdrawal.
DTs is not simply feeling anxious, sweating or having shaky hands. A person may not know where they are, may be unable to follow a conversation, or may see or hear things that are not present. Severe agitation, fever and a racing heart can occur at the same time.
DTs occurs in fewer than about 5% of people experiencing alcohol withdrawal, according to an alcohol detoxification prescribing guideline. It is still a critical emergency. One hospital guideline reports historical mortality of about 15% to 20% without treatment, compared with roughly 0% to 1% with appropriate hospital care. See the acute alcohol withdrawal guideline for the clinical figures.
Confusion or hallucinations during alcohol withdrawal are emergency signs, not symptoms to watch overnight.
When do DTs start after the last drink?
DTs most commonly starts 48 to 72 hours after alcohol is stopped or sharply reduced. Onset can occur from about 24 hours through day five, and severe delirium may peak around 96 hours.
Early withdrawal often starts much sooner, sometimes within 5 to 8 hours. The timeline below is a guide, not a safe countdown. The 2025 alcohol withdrawal guidance describes early symptoms and their usual progression.
| Time since the last drink or sharp reduction | What may happen | What it means |
|---|---|---|
| About 5 to 8 hours | Tremor, sweating, nausea, anxiety, insomnia, fast pulse or increased blood pressure may begin. | Withdrawal may be starting. Get medical advice, especially if dependence is possible. |
| First 24 to 48 hours | Early symptoms may intensify. Withdrawal seizures tend to occur earlier than DTs. | Feeling well at first does not rule out later severe withdrawal. |
| About 48 to 72 hours | Confusion, severe agitation, hallucinations and marked physical symptoms may emerge. | These can indicate DTs and require emergency hospital care. |
| Around 96 hours and through day five | Severe delirium can peak or occasionally begin later. | Continued monitoring matters when a clinician identifies significant withdrawal risk. |
Someone who stops after a Friday night drink may appear uncomfortable but coherent on Saturday, then become confused on Sunday or Monday. Our fuller alcohol withdrawal timeline explains why timing varies.
What are the symptoms of delirium tremens?
The central warning sign is new, fluctuating confusion during alcohol withdrawal. Hallucinations, severe agitation and marked physical overactivity make the situation more concerning.
- Confusion, disorientation or inability to maintain attention
- Not knowing the time, location or what is happening
- Visual or auditory hallucinations
- Severe agitation, fearfulness or restlessness
- Marked shaking or tremor
- Heavy sweating
- Fever
- Rapid heart rate, particularly a pulse above 120 beats per minute in one clinical pathway
- Seizure, collapse or reduced responsiveness
Symptoms can fluctuate. A person may briefly answer normally and then become disoriented again. The alcohol withdrawal management pathway treats delirium, hallucinations and severe autonomic signs as red flags requiring urgent escalation.
Ordinary withdrawal can still need treatment even without delirium. Read about the broader range of alcohol withdrawal symptoms, but do not use an online symptom list to rule out an emergency.
What should you do if you suspect DTs?
Call 911 immediately if someone withdrawing from alcohol becomes confused, has hallucinations, has a seizure or is severely agitated. DTs should be treated in an acute hospital, not through home observation or a routine outpatient appointment.
- Tell the dispatcher that alcohol withdrawal and delirium tremens may be involved.
- Stay with the person if you can do so safely. Keep the immediate area clear of traffic, stairs, sharp objects and other hazards.
- Do not argue about hallucinations or try to physically restrain severe agitation unless needed to prevent immediate injury.
- If a seizure occurs, move nearby objects away, protect the head if possible and do not put anything in the mouth.
- Gather useful information for paramedics: time of the last drink, usual daily amount, morning drinking, prior seizures or DTs, medical conditions and all medications or drugs used.
- Do not let the person drive. Wait for emergency medical transport.
Also call 911 for fainting, chest pain, trouble breathing, fever, severe weakness or reduced responsiveness. If opioids, sleeping pills or benzodiazepines may also have been taken, tell the dispatcher because breathing suppression and overdose are additional concerns.
Do not wait for every listed symptom. New confusion, a seizure or hallucinations during withdrawal is enough reason to seek emergency help.
Who is at higher risk of severe alcohol withdrawal?
A previous withdrawal seizure or previous episode of DTs raises concern substantially. Heavy regular drinking and signs of physical dependence also require medical assessment before alcohol is stopped or sharply reduced.
The ASAM alcohol withdrawal guideline identifies factors that can affect the need for inpatient care. These include:
- A previous alcohol withdrawal seizure
- A previous episode of delirium tremens
- Age over 65
- Serious liver, kidney, lung or other medical disease
- Use of opioids, benzodiazepines, sleeping pills or other sedating drugs
- Pregnancy possibility
- Limited support or an unsafe place to complete monitored withdrawal
Tell the clinician the actual amount and timing of your alcohol use. Mention the first drink of the day, including a 7 a.m. drink used to settle shaking, nausea or anxiety. Also describe previous attempts to stop, even if they happened years ago. The current drinking amount alone cannot predict a safe withdrawal.
Call 911 now for confusion, hallucinations, a seizure, severe agitation, fainting, chest pain, trouble breathing, fever or reduced responsiveness during alcohol withdrawal. If you drink heavily or regularly and may be dependent, get medical advice before stopping or sharply reducing alcohol.
How is delirium tremens treated in the hospital?
Hospital treatment aims to control withdrawal quickly while protecting breathing, circulation and brain function. Care includes frequent reassessment, monitored medication and treatment of dehydration, nutritional problems or other complications.
Benzodiazepines are first-line medicines for alcohol withdrawal seizures and DTs. Doses must be selected and adjusted by clinicians because excessive sedation, respiratory depression and interactions with alcohol or opioids can be dangerous. Learn more about clinician-directed medicine for alcohol withdrawal.
What hospital care may include
- Repeated checks of pulse, blood pressure, temperature, breathing and mental state
- Intravenous access and fluids when indicated
- Clinician-directed benzodiazepine treatment
- Blood tests and assessment for infection, injury or another cause of delirium
- Thiamine and other nutritional support
- A higher level of monitoring if symptoms remain severe or breathing is affected
Thiamine matters because heavy alcohol use and poor nutrition increase the risk of Wernicke encephalopathy. This is a separate neurological emergency that can coexist with DTs. Hospital protocols, including inpatient alcohol dependence guidance, commonly include thiamine as part of managed withdrawal.
Clinicians may use a structured withdrawal assessment, but the score is only part of the evaluation. Our guide to the CIWA scale explains why it should not be treated as a home safety test.
What should you avoid during possible severe withdrawal?
Do not try to treat severe withdrawal with alcohol, borrowed medication, sleeping pills or opioids. These approaches can mask worsening symptoms, suppress breathing or cause overdose and aspiration.
- Do not take someone else's benzodiazepines.
- Do not combine alcohol with opioids, sleeping pills or sedatives.
- Do not rely on small drinks to hold symptoms off until morning.
- Do not leave a confused or hallucinating person alone.
- Do not assume shaking without confusion is harmless, especially after a past seizure or DT episode.
- Do not drive yourself to care if you are confused, faint, severely shaky or medically unstable.
A drink may temporarily suppress withdrawal symptoms, but it does not provide controlled detoxification. It can also delay the point at which emergency care is sought. Repeated attempts to cut down can produce repeated withdrawal episodes, and a planned reduction is not automatically safer than clinician-supervised care.
How can DTs be prevented?
The safest prevention is medical planning before a physically dependent person stops or sharply reduces alcohol. A clinician can decide if monitored outpatient treatment is reasonable or if hospital detoxification is safer.
Before changing your intake, write down your usual drinks per day, the time of your first drink, morning symptoms, prior withdrawal experiences, seizure or DT history, health conditions and all medications. Do not reduce the reported amount to avoid embarrassment. Accurate details directly affect the safety plan.
The hospital alcohol care guidance specifically warns people who may be physically dependent not to stop suddenly unless a clinician has said it is safe. A medically planned approach can include monitoring, medication and nutritional support.
If you are not currently in an emergency, start with primary care, an addiction medicine service or an urgent care clinician who can assess withdrawal risk. Our guide on how to stop drinking safely covers preparation and longer-term support after the immediate withdrawal risk has been addressed.
Delirium tremens FAQ
Can delirium tremens kill you?
Yes. DTs is a life-threatening alcohol withdrawal emergency. One hospital guideline reports historical mortality around 15% to 20% when untreated, compared with roughly 0% to 1% with appropriate hospital treatment. Suspected DTs needs immediate emergency assessment rather than home monitoring.
How soon after stopping alcohol do DTs begin?
DTs most commonly begins 48 to 72 hours after stopping or sharply reducing alcohol. It can start from about 24 hours through day five, and severe delirium may peak around 96 hours. Mild symptoms or feeling well during the first day does not prove that later withdrawal will be safe.
Can DTs happen after cutting down instead of quitting?
Yes. Withdrawal can begin after a sharp reduction, not only after alcohol is stopped completely. A person who is physically dependent should not assume that cutting down alone makes detoxification safe. Medical assessment is needed before a major change in intake.
Can you have DTs without having a seizure?
Yes. Seizures and DTs are separate severe withdrawal complications, although both can occur in the same person. Withdrawal seizures generally occur earlier, while delirium often emerges later. New confusion, hallucinations or severe agitation still requires emergency care even if no seizure has occurred.
What is the difference between alcohol withdrawal and DTs?
Alcohol withdrawal can cause shaking, sweating, nausea, anxiety, insomnia and a fast pulse. DTs adds delirium, with fluctuating confusion, poor attention or disorientation, often alongside hallucinations, severe agitation, fever and marked physical symptoms. DTs requires immediate hospital treatment.
Can drinking alcohol prevent delirium tremens?
Alcohol may temporarily suppress withdrawal symptoms, but it is not a controlled or reliable treatment. Using drinks to manage shaking or anxiety can delay care, increase intake and mask deterioration. Someone at risk needs clinician-directed withdrawal management rather than a home alcohol schedule.
How long does delirium tremens last?
The course varies and depends on treatment, health conditions and other complications. Do not use an expected duration to decide when to seek help. Confusion, hallucinations, seizures or severe agitation during withdrawal requires emergency care as soon as the symptoms appear.
Can delirium tremens be treated at home?
No. Suspected DTs requires acute hospital care with frequent reassessment, monitored medication and support for complications. Home observation, a routine appointment or borrowed sedatives is not adequate. Call 911 if delirium, hallucinations, a seizure or severe agitation develops during withdrawal.
References
- Norfolk and Norwich University Hospitals: Acute Alcohol Withdrawal
- Cambridgeshire and Peterborough NHS Foundation Trust: Alcohol Detox Prescribing Guideline
- Essex Partnership University NHS Foundation Trust: Management of Alcohol, Opioid and Benzodiazepine Dependence
- Tees, Esk and Wear Valleys NHS Foundation Trust: Alcohol Withdrawal Management Pathway
- Oxford Health NHS Foundation Trust: Guidelines for the Management of Alcohol Dependence
- Bradford Teaching Hospitals NHS Foundation Trust: Alcohol Care Team