Alcohol addiction exists on a spectrum, and recognizing it isn’t always straightforward. Someone doesn’t need to be drinking all day or losing jobs to qualify. The clinical term is alcohol use disorder (AUD), and it’s diagnosed when a person meets at least 2 out of 11 specific criteria within a 12-month period. Two or three criteria indicate mild AUD, four or five indicate moderate, and six or more indicate severe.
Whether you’re worried about a partner, a parent, a friend, or yourself, here’s what to look for and how to make sense of what you’re seeing.
The 11 Signs Clinicians Look For
These are the criteria used to formally diagnose alcohol use disorder. You don’t need a medical degree to recognize them in someone’s life. In the past 12 months, has the person:
- Regularly drunk more, or for longer, than they planned to
- Wanted to cut back or stop, or tried to, but couldn’t
- Spent a lot of time drinking, recovering from drinking, or obtaining alcohol
- Experienced strong cravings or urges to drink
- Failed to meet responsibilities at work, school, or home because of drinking
- Kept drinking despite it causing problems with family or friends
- Given up or pulled back from activities and hobbies they used to enjoy
- Drunk in situations where it’s physically dangerous, like driving or swimming
- Continued drinking even though it’s worsening depression, anxiety, or another health problem
- Needed noticeably more alcohol to get the same effect (tolerance)
- Experienced withdrawal symptoms like shakiness, sweating, nausea, or insomnia when not drinking, or drunk specifically to avoid those symptoms
If two or more apply, the person likely meets the threshold for AUD. You don’t need all eleven. Someone who only drinks on weekends but consistently can’t stop once they start, and who has tried unsuccessfully to cut back, already meets two criteria.
Behavioral Patterns That Often Go Unnoticed
Not everyone with a drinking problem looks like the stereotype. Many people hold steady jobs, maintain relationships, and appear fine on the surface. The signs tend to be subtler, especially early on.
Watch for a pattern where drinking gradually takes priority over other things. Someone who used to play sports on Saturdays now spends those mornings recovering. A person who always has a reason to open a bottle, whether it’s celebrating, unwinding, or dealing with a bad day. Drinking alone or in secret is a common red flag, as is becoming defensive or irritated when someone brings up their alcohol use.
Tolerance is one of the more telling signs because it’s observable from the outside. If someone can drink amounts that would visibly impair others and seem relatively unaffected, that’s not a sign of strength. It means their brain and body have adapted to regular heavy exposure. Over time, you may also notice unstable moods, poor judgment, memory gaps they brush off, or a general narrowing of their interests to activities where alcohol is available.
How Much Drinking Is Too Much
The National Institute on Alcohol Abuse and Alcoholism defines heavy drinking as five or more drinks on any single day for men (or 15 or more per week) and four or more on any day for women (or eight or more per week). Consistently drinking at these levels significantly raises the risk of developing AUD, even if the person doesn’t yet show obvious signs of dependence.
These thresholds are lower than many people expect. A “standard drink” is 12 ounces of regular beer, 5 ounces of wine, or 1.5 ounces of spirits. Generous pours at home often count as two or three standard drinks per glass.
A Quick Self-Check
If you’re wondering about your own drinking, the CAGE questionnaire is a simple four-question screen used in clinical settings:
- Have you ever felt you should cut down on your drinking?
- Have people annoyed you by criticizing your drinking?
- Have you ever felt guilty about your drinking?
- Have you ever had a drink first thing in the morning (an eye-opener) to steady your nerves or get rid of a hangover?
Each “yes” scores one point. A score of 2 or more is considered clinically significant and warrants a closer look.
A more detailed screen, called the AUDIT-C, asks three questions about how often you drink, how many drinks you have on a typical drinking day, and how often you have six or more drinks in one sitting. It’s scored on a scale of 0 to 12. A score of 4 or higher for men, or 3 or higher for women, is considered positive for at-risk drinking.
Physical Signs of Long-Term Heavy Drinking
The body eventually shows what behavior tries to hide. One of the earliest visible markers is a persistently flushed or reddened face, caused by enlarged blood vessels near the skin’s surface. Over time, heavy drinkers may develop spider-shaped clusters of tiny blood vessels on their face, neck, chest, and hands. These radiate outward from a central point and often pulsate slightly.
Reddened palms are another sign linked to liver damage from chronic alcohol use. When liver disease progresses further, the skin and the whites of the eyes can take on a yellowish tint (jaundice), caused by a buildup of a pigment the liver normally processes. Unexplained bruising, puffiness in the face, and general changes in skin quality can also develop.
None of these signs alone confirms alcohol addiction, since other conditions can cause similar changes. But clustered together, especially alongside behavioral signs, they paint a clear picture.
What Withdrawal Looks Like
One of the most definitive signs of physical dependence is what happens when the person stops drinking. Withdrawal symptoms typically begin within 6 to 24 hours after the last drink. Mild symptoms include headache, anxiety, insomnia, and restlessness. More pronounced symptoms include trembling hands, heavy sweating, nausea, a racing heart, and elevated blood pressure.
If someone you know gets noticeably shaky, anxious, or sick when they haven’t had a drink for several hours, that’s a strong indicator of physical dependence. Some people drink specifically to avoid these symptoms, which creates a cycle that’s extremely difficult to break without support. Severe withdrawal can include confusion, hallucinations, and seizures, which is why stopping abruptly after heavy long-term use can be medically dangerous.
What Blood Tests Can Reveal
Doctors can order blood work that reveals patterns of heavy drinking even when someone denies it. The most widely used marker is a protein called CDT (carbohydrate-deficient transferrin), which becomes elevated with consistent heavy drinking of roughly five to seven drinks per day and stays elevated for up to three weeks after the person stops. Another common marker is GGT (an enzyme produced by the liver), which remains elevated for two to six weeks after heavy use.
A routine blood count can also offer clues. The average size of red blood cells tends to increase with chronic heavy drinking, and this stays elevated for two to four months even after someone stops, making it hard to hide a long history of overuse. Liver enzymes commonly checked in standard blood panels can also be elevated for weeks after excessive intake.
How to Approach Someone You’re Concerned About
Confrontation rarely works. People who feel attacked tend to shut down or escalate. An evidence-based approach called CRAFT (Community Reinforcement and Family Training) offers a different framework. It was developed from behavioral research and trains family members or close friends to change the dynamics around someone’s drinking without ultimatums or ambush-style interventions.
The core idea is to identify what triggers the person’s drinking and what consequences (often unintentionally positive ones) reinforce it. For example, if a partner always smooths things over after a heavy drinking episode, that removes a natural consequence. CRAFT teaches you to provide more positive reinforcement when the person is sober, stop cushioning the fallout of drinking episodes, and look for moments when the person might be more open to considering help.
This approach has been shown to be more effective at getting someone into treatment than traditional interventions. It also helps the concerned family member take care of their own wellbeing in the process, which matters more than most people realize when living alongside someone with a drinking problem.