What Are the Signs of Alcohol Withdrawal, and When Is It Dangerous?
Medically reviewed by The Ridge Ohio clinical team · Updated
When does alcohol withdrawal become dangerous?
Alcohol withdrawal starts 6–12 hours after the last drink and ranges from mild — anxiety, tremors, sweating — to life-threatening: seizures and delirium tremens. The risk is highest for anyone who drinks heavily every day and stops suddenly. How severe it gets depends on how much and how long they’ve been drinking, and whether they’ve had complicated withdrawal before. This is a medical detox situation, not something to manage at home. If you’re seeing seizures, confusion, or fever, call 911. To understand how dependence builds toward this point, see the stages of alcohol addiction.
01 What Are the Mild to Moderate Symptoms?
-
Tremors, shaky hands
-
Anxiety and restlessness
-
Sweating and nausea
-
Insomnia and irritability
-
Rapid heart rate
-
Headache
02 What Are the Dangerous Symptoms?
Call 911 if you see any of these
Delirium tremens (DTs) is the most severe form of alcohol withdrawal — disorientation, agitation, hallucinations, fever, and dangerous swings in heart rate and blood pressure. It typically appears 48–72 hours after the last drink and requires emergency treatment. Untreated, severe withdrawal can be fatal.
- Seizures (often 12–48 hours after the last drink)
- Hallucinations or severe confusion
- Fever above 101°F
- Chest pain or irregular heartbeat
- Disorientation that’s getting worse
03 When Should I Call 911 or Get to Detox?
Two different situations, two different responses. If symptoms are already severe, it’s an emergency. If your partner drinks daily and is planning to stop, the safest move is to get medical help lined up before they quit — not after symptoms start. The choice between alcohol detox under medical supervision and stopping on their own isn’t close; see detox versus quitting cold turkey.
Emergency
Seizures, severe confusion, fever above 101°F, hallucinations, or chest pain? Call 911 now.
Planning to stop
If they drink daily, don’t wait for symptoms. Call a medical detox program first.
Same-day help
The Ridge can often admit the same day. Call before they stop drinking so our medical team can guide the timing safely.
04 Signs of Alcohol Withdrawal FAQ
-
Can withdrawal symptoms start while someone is still drinking?
Not true withdrawal, but someone who’s physically dependent can feel symptoms between drinks — morning shakes, anxiety until the first drink, sweating overnight. These are signs of alcohol addiction and dependence, and they predict real withdrawal risk if the person stops suddenly.
-
How quickly can someone be admitted if they’re already in withdrawal?
Often the same day, depending on overall health and any chronic conditions. The Ridge is frequently contacted by hospitals and families when someone is admitted for withdrawal. Once the person is stabilized at the hospital, our admissions and medical teams arrange direct admission — and we can provide transportation from the hospital. Learn more about our treatment programs.
-
Is it safe to detox at home?
For mild cases, sometimes — with medical guidance. For anyone who drinks daily, has a seizure history, or shows severe symptoms, home detox is dangerous and can be fatal. When in doubt, call a medical professional or 911. Stopping abruptly is the riskiest path.
-
What is delirium tremens?
DTs is the most severe form of alcohol withdrawal: extreme confusion, agitation, hallucinations, fever, and cardiovascular instability. It usually appears 48–72 hours after the last drink and is a medical emergency requiring immediate hospital treatment. It’s not something to wait out at home.
-
Can I give them anything to help at home?
Don’t give them alcohol to “taper” without medical guidance, and don’t give sedatives. Keep them hydrated, calm, and monitored, and get medical help if symptoms worsen. Detox is managed safely with medications used in alcohol detox under supervision — not improvised at home.
-
What should I tell the ER if we go to the hospital?
Tell them exactly what and how much your partner has been drinking, when the last drink was, and what symptoms you’re seeing. Be honest — that information directly affects treatment decisions, and it’s not the moment to minimize the amount.
The Conversations You Need to Have Are Confidential.
Related questions and resources
Detox vs. quitting cold turkey
Why supervised detox is safer than stopping on your own.
What medications are used in alcohol detox?
How medical detox manages symptoms and prevents complications.
What are the stages of alcohol addiction?
How dependence develops and where withdrawal risk begins.
How do I explain rehab to my kids?
Age-appropriate guidance for the family conversation.
What’s the first week of rehab like?
What to expect from intake through early treatment.
How do I convince my husband to go to rehab?
What to say when a partner resists treatment.