Introduction
The CIWA-Ar calculator (Clinical Institute Withdrawal Assessment for Alcohol, Revised) is a tool used by doctors and nurses to measure how bad alcohol withdrawal symptoms are. The revised 10-item scale was published by Sullivan and colleagues in 1989.2 It scores 10 areas, such as nausea, tremor, sweating, anxiety, and more, on a scale from 0 to 7 each (except orientation, which goes up to 4). The scores are added together for a total between 0 and 67.
A higher CIWA-Ar score means worse withdrawal. The severity bands below are the ones in common clinical use; the original paper's abstract does not print them. Scores of 0 to 7 mean mild withdrawal. Scores of 8 to 15 mean moderate withdrawal. Scores of 16 to 20 mean moderate to severe withdrawal. Scores of 21 or higher mean severe withdrawal that may need urgent medical care.
This calculator lets you select a score for each of the 10 criteria, then adds them up for you. It shows your total score, a severity level, a color-coded gauge, a full breakdown table, and a step-by-step solution. Use it to quickly and accurately assess alcohol withdrawal severity at the bedside.
How to Use Our CIWA-Ar Calculator
Rate each of the 10 alcohol withdrawal symptoms below based on what you observe or what the patient reports. The calculator will add up all scores and show a total CIWA-Ar score from 0 to 67, along with the severity level of withdrawal.
Nausea / Vomiting: Pick a score from 0 to 7 based on how sick the patient feels. A 0 means no nausea, and a 7 means constant nausea with vomiting.
Tremor: Ask the patient to extend their arms with fingers spread apart. Pick a score from 0 to 7 based on how much shaking you see or feel.
Paroxysmal Sweats: Look at the patient for signs of sweating. Pick a score from 0 to 7, where 0 means no sweat and 7 means drenching sweats.
Anxiety: Ask the patient if they feel nervous. Pick a score from 0 to 7 based on how anxious they appear or report feeling.
Agitation: Watch how the patient moves during the interview. Pick a score from 0 to 7 based on their level of restlessness.
Tactile Disturbances: Ask the patient about itching, burning, numbness, or feeling bugs on their skin. Pick a score from 0 to 7 based on how severe these feelings are.
Auditory Disturbances: Ask the patient if sounds seem harsh or scary, or if they hear things that are not there. Pick a score from 0 to 7.
Visual Disturbances: Ask the patient if light seems too bright or if they see things that are not there. Pick a score from 0 to 7.
Headache / Fullness in Head: Ask the patient if their head feels different or if there is pressure. Pick a score from 0 to 7. Do not count dizziness or lightheadedness.
Orientation / Clouding of Sensorium: Ask the patient what day it is, where they are, and who you are. Pick a score from 0 to 4 based on how well they can answer.
What Is the CIWA-Ar Score?
The CIWA-Ar stands for the Clinical Institute Withdrawal Assessment for Alcohol, Revised. It is a scoring tool used by doctors and nurses to measure how bad a person's alcohol withdrawal symptoms are. When someone who drinks heavily stops drinking, their body can react in ways that range from mild discomfort to life-threatening emergencies. The CIWA-Ar helps medical staff figure out how serious those symptoms are so they can give the right treatment.
How the CIWA-Ar Works
The CIWA-Ar looks at 10 common signs of alcohol withdrawal. These include nausea, tremors (shaking), sweating, anxiety, agitation, and disturbances in touch, hearing, and vision. It also checks for headaches and confusion about time, place, or people. A clinician watches the patient and asks simple questions, then gives a score for each sign. Most items are scored from 0 to 7, except orientation, which is scored from 0 to 4. All 10 scores are added together for a total that can range from 0 to 67.
What the Total Score Means
- 0–7: Minimal to mild withdrawal. The patient may not need medication.
- 8–15: Moderate withdrawal. Medication may be helpful.
- 16–20: Moderate to severe withdrawal. Medical treatment is usually needed.
- 21 or higher: Severe withdrawal. This is a medical emergency. The patient is at risk for seizures and a dangerous condition called delirium tremens.
Why the CIWA-Ar Matters
Alcohol withdrawal can be dangerous and even deadly without proper care. The CIWA-Ar gives healthcare workers a fast, standard way to track symptoms over time. It is typically repeated every few hours so the care team can see if a patient is getting better or worse. Based on the score, clinicians decide whether to give benzodiazepines or other medications, and how much to give. This approach is called symptom-triggered therapy. In a randomized double-blind trial it cut the median length of treatment from 68 hours to 9 hours and reduced the sedative dose from 425 mg to 100 mg, with no difference in withdrawal severity, seizures, or delirium.1
In patients with a history of heavy alcohol use, clinicians often assess for liver damage alongside withdrawal. Tools such as the Child-Pugh Calculator and the MELD Calculator help evaluate liver function, which can influence medication choices and overall treatment planning. Monitoring electrolytes is also important during withdrawal, and tracking vital signs like blood pressure helps the care team monitor cardiovascular stability throughout the withdrawal process.
Important: This calculator is an educational tool. It does not replace professional medical evaluation. Alcohol withdrawal should always be managed under the care of a qualified healthcare provider.