Alcohol use disorder exists on a spectrum, and recognizing it in someone you care about often means looking at a pattern of behaviors rather than any single moment. The clinical threshold is lower than most people expect: meeting just 2 out of 11 specific criteria is enough for a diagnosis of mild alcohol use disorder. Understanding those criteria, along with the physical and behavioral signs that tend to show up over time, can help you see what’s really going on.
The 11 Criteria Professionals Use
The standard diagnostic framework lists 11 symptoms. A person who meets 2 or 3 has mild alcohol use disorder. Four or 5 indicates moderate. Six or more is classified as severe. You don’t need a clinical setting to notice these patterns in someone’s life:
- Drinking more or longer than intended. They say they’ll have two drinks and consistently have six.
- Repeated failed attempts to cut back. They’ve talked about drinking less or tried to stop, but it doesn’t stick.
- Spending a lot of time drinking or recovering. Entire weekends lost to hangovers, or drinking that stretches across hours every evening.
- Craving alcohol. They describe wanting a drink so badly they can’t focus on anything else.
- Failing to meet responsibilities. Work suffers, the house is neglected, kids’ schedules get missed.
- Continuing despite relationship problems. Fights about drinking keep happening, but the drinking doesn’t change.
- Giving up activities they used to enjoy. Hobbies, exercise, or social events get replaced by drinking.
- Drinking in risky situations. Driving after drinking, swimming while intoxicated, or repeatedly making unsafe decisions while drunk.
- Continuing despite health consequences. They keep drinking even after blackouts, worsening depression, or a doctor’s warning.
- Needing more alcohol for the same effect. Their tolerance has climbed noticeably over months or years.
- Experiencing withdrawal symptoms. Shakiness, sweating, nausea, insomnia, or anxiety when they stop drinking.
No one needs to check every box. Two persistent patterns from this list over a 12-month period are clinically significant.
A Quick Screening You Can Do Yourself
A widely used screening tool called the CAGE questionnaire boils the question down to four yes-or-no items. Has the person ever felt the need to Cut down on drinking? Been Annoyed by criticism of their drinking? Felt Guilty about drinking? Needed a morning Eye-opener to steady their nerves or get rid of a hangover?
Answering yes to two or three of these raises a high level of suspicion. A yes to all four is considered virtually diagnostic. These questions work because they target the internal experience of losing control, something the person themselves may recognize even if they minimize it outwardly.
Behavioral Patterns That Build Over Time
The most visible signs rarely appear overnight. They develop gradually, which is part of what makes alcohol use disorder hard to spot early. In the earliest phase, a person simply starts relying on alcohol to manage stress, unwind after work, or feel comfortable socially. It looks normal because, in many social circles, it is normal. But the shift is that alcohol becomes the default coping tool rather than an occasional choice.
As the pattern deepens, you may notice them thinking or talking about drinking more often. They might start hiding how much they consume, drinking alone, or getting defensive when the topic comes up. Blackouts or memory gaps after drinking are a significant red flag at this stage, even if they happen only occasionally. Lying about drinking habits, whether about quantity or frequency, is one of the most common early behavioral markers.
In the middle stages, alcohol starts visibly interfering with daily life. They might miss work, withdraw from friends who don’t drink, or stop showing up for commitments. Relationships become strained not just because of the drinking itself but because of the unpredictability, mood swings, and broken promises that come with it. You may notice unstable moods, poor judgment, problems with attention, and increasing isolation.
Physical Signs to Watch For
Certain physical changes can signal chronic heavy drinking, even when the person insists everything is fine. Red or bloodshot eyes, slurred speech (not just when visibly drunk), poor coordination, and frequent memory lapses are common early indicators. Over time, more serious signs emerge.
Chronic alcohol use damages the nervous system. This can show up as numbness or tingling in the hands and feet, a condition called peripheral neuropathy that’s common in people with severe alcohol use disorder. Painful burning sensations in the feet are particularly characteristic. Nerve damage can also cause irregular heartbeat, drops in blood pressure when standing up, and erectile dysfunction.
Involuntary rapid eye movements and weakness of the eye muscles can develop from a vitamin B1 deficiency that heavy drinking causes. Visible hand tremors, especially in the morning or when the person hasn’t had a drink in several hours, are a strong indicator of physical dependence. Disordered thinking and short-term memory problems point to neurological damage that worsens with continued use.
Tolerance and Withdrawal Are Major Warning Signs
Tolerance means the brain has adapted to alcohol’s presence and now requires more of it to produce the same effect. If someone who used to get relaxed after two beers now drinks five or six without seeming affected, that’s tolerance at work. It feels like a sign of strength to many drinkers, but it’s actually a sign that the brain is compensating for a substance it’s being exposed to too often.
Withdrawal is the clearest indicator of physical dependence. When someone who drinks heavily stops or significantly cuts back, initial symptoms can appear within 3 to 6 hours, often before alcohol has even fully cleared their system. Early withdrawal looks like anxiety, insomnia, and tremors. These typically ease within 1 to 3 days.
For some people, withdrawal becomes dangerous. Seizures occur in 5 to 10 percent of patients within the first two days of stopping. The most severe form, delirium tremens, involves agitation, confusion, disorientation, and vivid hallucinations. Symptoms peak between days three and four and can persist up to 96 hours. If someone you know experiences shaking, sweating, a racing heart, nausea, or sees or hears things that aren’t there after stopping drinking, that’s a medical emergency.
What Problem Drinking Looks Like vs. Severe Addiction
Not everyone with alcohol use disorder looks like the stereotype of someone who drinks all day and can’t hold a job. Many people with mild or moderate AUD are functional. They go to work, maintain relationships, and seem fine on the surface. What gives it away is the pattern underneath: the inability to consistently control how much they drink, the quiet guilt, the slow narrowing of their life around alcohol.
Severe addiction is harder to miss. At this stage, a person may need alcohol to function at all, drinking throughout the day just to avoid withdrawal. Tremors, hallucinations, or seizures can occur when they try to stop. Hospital visits, chronic health problems, and deep emotional isolation become part of the picture. Heavy drinking also raises the risk of type 2 diabetes through weight gain, elevated blood fats, and decreased insulin sensitivity.
How to Talk to Someone You’re Worried About
If you’ve recognized several of these signs in someone you care about, how you bring it up matters. The most important thing is to approach the conversation without judgment. Alcohol use disorder is a medical condition, not a character flaw. Framing it that way, both in your own mind and in the conversation, changes everything about how the other person receives what you’re saying.
Choose your timing carefully. Don’t bring it up when the person is intoxicated, in crisis, or at a family gathering. Wait for a calm, private moment. Think through what you want to say beforehand, and consider practicing with someone else first. These conversations get emotional quickly, and preparation helps you stay focused on facts rather than getting pulled into an argument.
Stay calm, supportive, and specific. Instead of broad accusations (“You drink too much”), describe concrete things you’ve observed and how they’ve affected you or the people around them. Don’t corner the person or involve a group unless you’ve been guided by a professional to do so. The goal is for them to feel supported, not ambushed.
If they’re open to getting help, involve them in deciding what kind of help feels right. Some people prefer one-on-one therapy, others respond better to group settings, and some want to start with their doctor. If they reject the idea entirely, give them space. They may need time to sit with the conversation. You can revisit it later without pressuring them, and in the meantime, learning about available treatment options puts you in a better position to help when they’re ready.