𧬠CIWA-Ar Withdrawal Scale
Alcohol withdrawal severity: 10 items, scored 0 to 67.
Clinical education only. Alcohol withdrawal can be life-threatening; assessment and treatment require medical supervision.
Alcohol withdrawal can kill, and the CIWA-Ar scale is how hospitals measure it. Ten items covering the autonomic storm of withdrawal, nausea, tremor, sweats, anxiety, agitation, perceptual disturbances, headache, and orientation, scored 0 to 67. The total drives symptom-triggered benzodiazepine dosing, the standard of care. This calculator scores all ten items with the proper maxima.
How to Use This Scale
Score each item by observation and patient report. The total and severity band appear.
Score the 7-point items (0 none to 7 most severe) and orientation (0-4).
Read the band: under 8 minimal, 8-15 moderate, over 15 severe.
Reassess every 1-4 hours. Rising scores trigger treatment per protocol; this page explains the scale, it does not run the protocol.
The Ten Items
Sullivan and colleagues published CIWA-Ar in 1989 as a refined withdrawal scale, and it became the backbone of symptom-triggered therapy: instead of scheduled benzodiazepines for everyone, nurses score regularly and medicate when the score crosses thresholds (commonly 8-10). Trials showed symptom-triggered dosing uses less medication with better outcomes than fixed schedules. The scale measures the withdrawal syndrome's autonomic and neuropsychiatric dimensions; it does not measure seizures or delirium tremens directly, which are the complications treatment aims to prevent.
Scoring takes training: the perceptual disturbance items ask about itching, burning, numbness, sounds, and visual changes, scored on patient report with observation anchors. Tremor is observed with arms extended. Orientation tests person, place, time, and situation. Inter-rater reliability is good among trained staff and poor among the untrained, which is why this page is for understanding the scale, not for running it on a loved one at home. Home withdrawal assessment is unsafe; withdrawal belongs in medical care.
Worked Example
Nausea 2, tremor 3, sweats 2, anxiety 3, agitation 1, tactile 0, auditory 0, visual 1, headache 2, orientation 0: total 14, moderate withdrawal. Typical protocol response: symptom-triggered benzodiazepine (e.g., lorazepam or diazepam per order set), thiamine, fluids, electrolyte repletion, and reassessment in 1-2 hours. If the next score hits 22 with worsening tremor and visual disturbances, that is severe: scheduled dosing, close monitoring for DTs, ICU consideration. The trend across scores matters as much as any single total.
Symptom-Triggered Therapy: Why It Won
Fixed-schedule benzodiazepines overshoot and undershoot: some patients get too sedated, others seize through inadequate dosing. Symptom-triggered therapy individualizes by the oldest method available, asking the patient. Less total benzodiazepine, shorter treatment courses, fewer complications: the evidence is consistent. CIWA-Ar is the instrument that made individualization practical at scale, which is why nearly every US hospital protocol is built on it.
Essential co-treatments ride alongside: thiamine before glucose (to prevent Wernicke's), magnesium and potassium repletion, and seizure precautions. Benzodiazepines are first-line because alcohol and benzos share the GABA mechanism; the dose replaces what the brain misses. Phenobarbital protocols are gaining ground in some centers for severe or refractory cases. None of this happens at home: withdrawal seizures and DTs carry real mortality, and the 10 percent historical mortality of untreated DTs is the number that justifies medical supervision for heavy daily drinkers who stop.
Who Needs Medical Withdrawal Management
Heavy daily drinkers with prior withdrawal symptoms, seizures, or DTs; anyone with significant medical comorbidity; and people unable to be monitored safely. Predictors of severe withdrawal include prior episodes (kindling worsens each one), high daily intake, and concurrent illness. If stopping drinking brings tremors, sweating, nausea, or anxiety within hours, that is the body announcing dependence, and stopping should happen under medical supervision. Call a doctor, urgent care, or in the US SAMHSA 1-800-662-4357 for guidance to supervised detox. The brave move is the supervised one.
Related Calculators
Keep exploring: try our CAGE questionnaire and Maddrey's discriminant function for the next piece of the picture.
For informational purposes only, not medical advice. Consult a healthcare professional.
Frequently Asked Questions
What is the CIWA-Ar scale?
The Clinical Institute Withdrawal Assessment for Alcohol, revised: a 10-item scale (max 67) measuring alcohol withdrawal severity across nausea, tremor, sweats, anxiety, agitation, perceptual disturbances, headache, and orientation. Published by Sullivan et al. in 1989; it drives symptom-triggered treatment protocols.
How is CIWA-Ar scored?
Nine items score 0-7, orientation scores 0-4, total 0-67. Under 8 is minimal withdrawal, 8-15 moderate, over 15 severe. Nurses reassess every 1-4 hours and medicate per protocol when scores cross thresholds.
What CIWA score needs benzodiazepines?
Commonly scores of 8-10+ trigger symptom-triggered benzodiazepine doses per protocol, with higher scores getting larger or scheduled doses. Exact thresholds vary by institution; the protocol, not this page, governs treatment.
Can I use CIWA at home?
No. CIWA-Ar requires training to score reliably, and alcohol withdrawal itself requires medical supervision: seizures and delirium tremens can be fatal. Home assessment of withdrawal is unsafe. Seek medical care for withdrawal symptoms.
What is symptom-triggered therapy?
Giving benzodiazepines based on CIWA-Ar scores rather than a fixed schedule. Trials show it uses less medication with better outcomes than scheduled dosing, because it matches treatment to actual withdrawal severity.
What are the signs of severe alcohol withdrawal?
Marked tremor, heavy sweating, severe agitation, hallucinations, disorientation, and scores over 15. Delirium tremens (confusion, fever, rapid heartbeat, hallucinations) and seizures are the dangerous complications, typically 48-96 hours after the last drink.
Why is thiamine given in alcohol withdrawal?
To prevent Wernicke's encephalopathy: chronic alcohol use depletes thiamine, and giving glucose without thiamine can precipitate brain injury. Thiamine comes before or with glucose, always.
How long does alcohol withdrawal last?
Symptoms typically start 6-12 hours after the last drink, peak at 24-72 hours, and resolve within 5-7 days for most. Delirium tremens, when it occurs, peaks around 48-96 hours. Protracted symptoms (anxiety, insomnia) can linger weeks.
What is kindling in alcohol withdrawal?
The phenomenon where each withdrawal episode makes the next one worse: repeated cycles sensitize the brain's excitatory systems. It is why prior withdrawal seizures or DTs strongly predict severe future episodes.
What is the mortality of delirium tremens?
Around 5-10% even with treatment, and much higher untreated. It is a medical emergency: confusion, fever, autonomic instability, and hallucinations days after stopping drinking need immediate emergency care.