How Withdrawal Is Monitored During Detox in San Diego: What CIWA-Ar and COWS Scores Mean

Most people arriving at medical detox expect to be watched. Fewer expect to be scored. In a supervised detox setting, withdrawal is not judged only by how someone says they feel. Nurses and clinicians use structured rating scales, repeated on a schedule, to put a number on withdrawal severity and decide when medication is needed. This guide explains how that monitoring works in San Diego detox programs, what the two most common scales measure, and what you can do to help your own scores reflect what is really happening.

Why Detox Uses Scores Instead of Guesswork

Withdrawal changes hour to hour. Someone who seems settled at 10 p.m. can be shaking and sweating by 2 a.m. A rating scale gives every nurse on every shift the same yardstick, so a change in severity shows up as a change in the number rather than a difference of opinion between staff members. It also lets the care team give medication when symptoms actually call for it, rather than strictly on a fixed clock. This approach is often called symptom-triggered dosing.

For alcohol and benzodiazepines, this matters for safety. Withdrawal from either can cause seizures and, in severe cases, delirium tremens, which is a medical emergency. That is why medically supervised detox may be required for people who drink heavily or take benzodiazepines daily, and why stopping either suddenly without medical guidance is not recommended. Our alcohol detox program page describes how that supervision is set up for alcohol, and the same principles apply to benzodiazepine withdrawal.

The CIWA-Ar: How Alcohol Withdrawal Is Scored

The Clinical Institute Withdrawal Assessment for Alcohol, revised (CIWA-Ar), is a 10-item rating scale with a total score from 0 to 67 that clinicians use to measure how severe alcohol withdrawal is at a given moment. Published in 1989, it remains the most commonly used alcohol withdrawal scale in both medical and psychiatric settings. A nurse rates each item by observation and by asking short questions, and the assessment takes only a few minutes, so it can be repeated as often as hourly while withdrawal is active. Higher totals mean more severe withdrawal, and each treatment program’s written protocol sets the score at which medication is given and the score at which a physician must be called.

The 10 items cover:

• Nausea and vomiting
• Tremor
• Sweating
• Anxiety
• Agitation
• Tactile disturbances, such as itching, pins and needles, or a feeling of bugs on the skin
• Auditory disturbances
• Visual disturbances
• Headache or a feeling of fullness in the head
• Orientation and clouding of the senses

Some of these questions can feel strange in the moment, like being asked whether you are hearing things other people cannot hear, or what today’s date is. They are routine. They are there to catch early signs of complicated withdrawal before it becomes dangerous, and answering them honestly is one of the most useful things a patient can do.

The COWS: How Opioid Withdrawal Is Scored

For opioids, including fentanyl, heroin and prescription pain medication, most programs use the Clinical Opiate Withdrawal Scale (COWS). The version of the scale published by the National Institute on Drug Abuse (NIDA) describes it as an 11-item, clinician-administered tool that can be used in both inpatient and outpatient settings to rate common signs of opioid withdrawal and track them over time. The scoring bands printed on the form are 5 to 12 for mild, 13 to 24 for moderate, 25 to 36 for moderately severe, and more than 36 for severe withdrawal.

The 11 items include resting pulse, sweating, restlessness, pupil size, bone or joint aches, runny nose or tearing, stomach upset, tremor, yawning, anxiety or irritability, and gooseflesh. Several are measured rather than reported. A nurse checks your pulse and looks at your pupils, which is part of why the score is useful even when someone is too uncomfortable to describe how they feel.

COWS scores matter most when someone is starting buprenorphine. Taking a first dose too early, while other opioids are still occupying the brain’s receptors, can bring on sudden and intense withdrawal. Prescribers generally wait until the scale shows objective withdrawal before the first dose, and the American Society of Addiction Medicine (ASAM) COWS induction flow sheet is built around recording a score before that dose and again afterward. You can read more about how medication fits into longer-term care on our medication-assisted treatment page.

Why a Score Can Read Higher or Lower Than You Feel

A score is only as good as the information behind it. The NIDA form tells clinicians to rate each sign only on its apparent relationship to opioid withdrawal, and its own example is a pulse raised because the patient was jogging just before the assessment, which should not add to the score. In day-to-day detox care, several ordinary things can blur a reading:

• Recent exertion: Walking the hallway, climbing stairs or pacing right before vitals can raise heart rate for reasons unrelated to withdrawal.
• Caffeine and nicotine: Both can increase heart rate, restlessness and jitteriness, which overlap with items on both scales.
• First-night nerves: Being anxious about arriving in detox is normal and can be hard to separate from withdrawal anxiety without context.
• Underreporting: Some people play down their symptoms because they want to seem fine, which can delay medication they actually need.
• Other medical conditions: Fever, infection, thyroid problems or other medications can cause sweating, tremor or a fast heart rate on their own.

None of this means the scales are unreliable. It means the nurse needs context, and you are the person who has it.

What Else Is Monitored Besides the Score

A withdrawal scale is one part of the picture. During detox, the care team typically also tracks vital signs such as blood pressure, heart rate and temperature, which can rise during alcohol and benzodiazepine withdrawal. Staff watch fluids and food intake, since vomiting, diarrhea and heavy sweating can lead to dehydration. Overnight checks are normal in the first nights, so being woken for vitals is expected rather than a sign that something has gone wrong. Clinicians also check in on mood and safety, because withdrawal can bring intense anxiety or low mood, and the goal is to support the whole person, not only the physical symptoms.

What to Do on Your First Day of Detox

You do not need to learn how to score yourself, and you should never try to manage withdrawal by the numbers on your own. A few simple steps, though, help the team get your care right:

1. Ask three questions at your first assessment: Which scale are you using for me, how often will you check it, and what score means I get medication? Every program sets those thresholds in its own protocol, and knowing them makes the process feel less mysterious.
2. Give the nurse context before vitals: Mention it if you have just walked around, had coffee or smoked.
3. Describe symptoms as they are: Report hallucinations, confusion or a crawling feeling on your skin, even if it feels embarrassing, because these are exactly what the scale is designed to catch.
4. Do not wait for the next scheduled check: If symptoms get worse between assessments, tell staff right away.
5. Ask before you step down: Find out what your most recent scores were and what to do if symptoms return after you leave detox.

Detox Is the Start, Not the Whole of Treatment

A falling withdrawal score means the body is stabilizing. It does not mean the substance use disorder itself has been treated. Withdrawal management addresses the immediate physical risks, while therapy, medication where appropriate, and continuing care address what comes next. At our San Diego detox program, the care team works to plan the move into residential, partial hospitalization or intensive outpatient care before detox ends, so the next step is lined up rather than left to chance.

Questions About How Detox Is Monitored?

If you or someone you love is considering detox and wants to understand how withdrawal would be watched and managed, call Pacific Bay Recovery at 619-350-8220. Our admissions team can talk through what supervision typically looks like for alcohol, benzodiazepine or opioid withdrawal and help you plan the next step.

If you are worried about withdrawal right now, especially from alcohol or benzodiazepines, do not stop suddenly without medical advice. Seizures, severe confusion, hallucinations, chest pain or trouble breathing are emergencies: call 911 or go to the nearest emergency room. For free, confidential treatment referral information, the SAMHSA National Helpline is available 24 hours a day at 1-800-662-4357. If you are in emotional crisis, call or text 988. To talk with our team directly, call 619-350-8220.

Scale details and score bands in this article were checked against the NIDA and ASAM published forms in October 2026. This article is for educational purposes only and is not medical advice. Withdrawal can be dangerous, and decisions about detox and treatment should be made with a qualified healthcare provider who knows your full health history.