Delirium Tremens (DTs): Symptoms, Causes, Duration, and Treatment
Delirium tremens is the most severe form of alcohol withdrawal and a medical emergency that can be fatal without treatment. Slightly over half of U.S. adults had a drink in the past month as of 2018, and for people who drink heavily every day, quitting carries real physical risk.
Delirium tremens is a medical emergency that calls for professional care. Pines Recovery Life offers medically supervised detox in South Florida with round-the-clock monitoring.
Published May 6, 2020 · Updated August 2026 · Medically reviewed by Sergey Litvinov, MD
DTs sets in when someone who has been drinking heavily for a long time suddenly stops or sharply cuts back. It brings on severe confusion, agitation, hallucinations, seizures, a racing heart, and dangerous swings in blood pressure and body temperature. Without medical treatment, DTs can be fatal. It is largely preventable when alcohol withdrawal is managed under supervision, which is exactly what a medically supervised detox is for.
What are the symptoms of delirium tremens?
Most people who withdraw from alcohol have milder symptoms, and only a minority progress to DTs. When it does develop, symptoms usually build in stages.
Early withdrawal signs
In the first day after the last drink, someone may feel anxious and restless, struggle to sleep, sweat heavily, and notice a racing heartbeat, rising blood pressure, nausea, and shaking hands. These warn that withdrawal is underway and could escalate.
Signs that withdrawal is turning into DTs
Delirium tremens itself is marked by a sharp change in mental state and body function:
- Severe confusion and disorientation, sometimes not knowing where they are or what time it is
- Hallucinations that can be seen, heard, or felt
- Seizures, sometimes more than one
- Fever and heavy sweating
- An irregular or very fast heartbeat
- Dangerously high blood pressure
Left untreated, DTs can progress to coma, respiratory failure, and death. That is why it is treated as an emergency rather than something to wait out.
How long does delirium tremens last?
The timeline varies with a person’s drinking history, overall health, and how quickly they get treatment.
- 6 to 12 hours after the last drink: mild withdrawal begins, with anxiety, tremors, and nausea.
- 12 to 48 hours: symptoms can intensify, and some people experience hallucinations or seizures.
- 48 to 72 hours: this is the window when delirium tremens most often appears.
- 5 to 7 days: with proper treatment, the most acute symptoms usually settle.
Some people go on to have milder withdrawal symptoms that linger for weeks. In a medical detox, alcohol withdrawal is typically managed over about 3 to 7 days, with the exact length set by clinical need.
What causes delirium tremens?
The underlying cause is sudden alcohol withdrawal in someone who has become physically dependent on alcohol. Over time, heavy drinking suppresses the central nervous system, and the brain adapts by staying in a more excited state to compensate. When the alcohol is abruptly removed, that compensation is left unopposed and the nervous system swings into overdrive, which produces withdrawal and, at its most severe, DTs.
Who is most at risk?
DTs is more likely in people who:
- Have a long history of heavy, daily drinking
- Have gone through alcohol withdrawal before, especially with seizures or DTs
- Are in poor general health or have liver disease, an infection, or nutritional deficiencies
- Are also using other sedating substances, such as benzodiazepines or opioids
A previous severe withdrawal is one of the strongest warning signs, because withdrawal can get worse with each episode.
When delirium tremens is a medical emergency
Treat it as an emergency and call 911 if someone withdrawing from alcohol has a seizure, becomes severely confused or cannot be kept oriented, hallucinates, spikes a high fever, or develops a very fast or irregular heartbeat. These red flags mean the person needs medical care immediately. DTs can escalate quickly, so acting early is safer than waiting to see.
How medical detox prevents and treats DTs
Delirium tremens is largely preventable, and prevention is the whole point of medically supervised withdrawal. In an alcohol detox, a clinical team assesses the risk before withdrawal becomes dangerous, monitors the person continuously, and treats symptoms as they emerge rather than after they escalate. When DTs is already developing, hospital-level care focuses on keeping the person safe:
- Medication, most often from the benzodiazepine family, to calm the overactive nervous system and prevent or stop seizures
- Intravenous fluids and electrolytes to correct dehydration
- Thiamine and other nutritional support to address the deficiencies common in heavy drinking
- Close monitoring of heart rhythm and breathing to catch complications early
- Round-the-clock supervision so care can be adjusted as symptoms change
Managed this way, the danger of DTs drops dramatically compared with quitting alcohol suddenly and alone. That is the purpose of medical detox for alcohol withdrawal, with monitoring and medication in place from the start.
Care after detox
Delirium tremens is the first crisis in a long recovery. Because DTs signals a serious dependence on alcohol, ongoing treatment after detox is what protects against relapse and another dangerous withdrawal. Pines Recovery Life provides residential inpatient care where treatment addresses what drives heavy drinking, and any step-down care is planned with you before discharge. An alcohol detox center that carries your record straight into residential care keeps the plan in one set of hands.
Get help before withdrawal becomes dangerous
If you drink heavily and are thinking about stopping, doing it under medical care keeps you through the most dangerous window. Our team in Pembroke Pines can assess the risk and start a supervised detox. Call (855) 981-8935 or contact us online. We work with most major insurance plans, including BCBS, UnitedHealthcare (UHC), Aetna, Cigna, Tricare, Humana Military, and VA Community Care, and we can verify your benefits first.
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Frequently Asked Questions
What is delirium tremens (DTs)?
DTs is the most severe outcome of alcohol withdrawal. It involves confusion and disorientation, hallucinations, heavy trembling, and autonomic instability (rapid heart rate, high blood pressure, fever). It is a medical emergency.
When do DTs typically start?
DTs usually begin 48 to 96 hours after the last drink, though they can appear earlier in patients with severe long-term alcohol dependence or prior DT episodes.
How long do delirium tremens last?
Untreated DTs can last 3 to 7 days. With prompt medical treatment in a supervised detox setting, symptoms are controlled within 24 to 72 hours and the danger window is dramatically shortened.
Who is at risk for DTs?
Risk factors include daily heavy drinking for several months or more, prior withdrawal seizures or DTs, age over 30, dehydration, and co-occurring medical illness. About 3-5% of patients in alcohol withdrawal develop DTs without treatment.
Can DTs be fatal?
Historic untreated mortality is reported up to 5-15%. With modern medical detox, mortality is well under 1%. That is why medical supervision is non-negotiable for anyone at risk.
How are DTs treated?
Long-acting benzodiazepines (chlordiazepoxide, diazepam, lorazepam) for symptom control and seizure prevention, aggressive IV hydration, electrolyte correction, thiamine supplementation, and continuous vital sign monitoring. Pines provides all of this 24/7 on-site. Call (855) 981-8935.
