The stages of alcoholism describe how drinking can move from occasional use to heavy, harmful, and eventually life-threatening use. Most guides use three stages (early, middle, and end) or four (pre-alcoholic, early, middle, and end). These stages are not formal medical diagnoses. They are a way to describe a pattern that often builds over time.
Doctors no longer use "alcoholism" as a diagnosis. They diagnose alcohol use disorder, or AUD, and rate it as mild, moderate, or severe. This guide explains each stage, the early signs of alcoholism, what a functioning alcoholic looks like, how end stage alcoholism harms the body, and how to step off at any point. It is written for first responders and their families.
What Are the Stages of Alcoholism?
The stages of alcoholism are descriptive frameworks, not diagnoses. Clinicians diagnose alcohol use disorder using the DSM-5-TR, the American Psychiatric Association's diagnostic manual. According to the National Institute on Alcohol Abuse and Alcoholism (NIAAA), AUD is "a problematic pattern of alcohol use leading to clinically significant impairment or distress," and a diagnosis requires at least 2 of 11 symptoms within 12 months.
The criteria include drinking more than intended, failed attempts to cut down, craving, missed obligations, drinking despite harm to relationships or health, tolerance, and withdrawal. Severity depends on the count: 2 to 3 is mild, 4 to 5 is moderate, and 6 or more is severe. AUD is common. The 2025 National Survey on Drug Use and Health found that 25.7 million people aged 12 or older (8.9%) had AUD in the past year.
Stage models are older and looser. The best known comes from mid-20th-century research by E. M. Jellinek, who mapped a progression from social drinking to dependence. The Jellinek model is historical. Later research found that people do not all follow one fixed path. Still, the language helps people name where they are.
The three-stage model folds the pre-alcoholic phase into the early stage. Loosely, mild AUD matches early patterns, moderate matches middle patterns, and severe matches late patterns. The match is not exact.
Stepstone Connect runs a virtual first responder dual diagnosis IOP, so this guide looks closely at how stress, trauma, and drinking feed each other.
Early Signs of Alcoholism: The Pre-Alcoholic and Early Stage
The earliest stage looks like normal drinking that slowly changes purpose. Alcohol shifts from something you enjoy to something you use to cope. Few people notice at this point, including the drinker.
Early signs of alcoholism often include:
Drinking to unwind after a hard shift or a bad call
Needing more drinks than before to feel the same effect, which is called tolerance
Occasional binge drinking, meaning about five or more drinks for men or four or more for women in roughly two hours, per the NIAAA definitions
NIAAA defines heavy drinking as 5 or more drinks on any day or 15 or more per week for men, and 4 or more on any day or 8 or more per week for women. That does not prove AUD, but it deserves attention.
In the four-stage model, the pre-alcoholic phase is mostly social and the early phase is where drinking becomes a habit. This is the cheapest and easiest moment to change course, because physical dependence usually has not set in.
Middle-Stage Alcoholism: When Drinking Starts to Cost Something
Middle-stage alcoholism is when drinking causes visible problems and the drinker can no longer easily stop. It generally lines up with moderate AUD, where 4 or 5 of the 11 criteria apply.
Signs of alcoholism at this stage tend to be hard to hide:
Cravings that crowd out other thoughts
Withdrawal symptoms, such as shakiness, sweating, nausea, or poor sleep, when the effects wear off
Hiding bottles, drinking alone, or lying about how much
Missed shifts, late arrivals, or discipline at work
Fights at home, or pulling away from family and friends
Failed attempts to cut down
Withdrawal deserves a safety note. NIAAA reports that up to half of patients have some withdrawal symptoms when they stop, and a smaller group is at risk of life-threatening symptoms and needs intensive medical care. Anyone who drinks heavily every day should talk to a physician before quitting suddenly.
Drinking also tangles with mental health at this stage. Depression, anxiety, and PTSD symptoms can push drinking up, and drinking makes each worse. Treating both together is the idea behind dual diagnosis treatment for first responders. For broader warning signs across substances, see this first responder substance use guide.
The Functioning Alcoholic: Can Someone Be Struggling and Still Look Fine?
A functioning alcoholic is a person with AUD who keeps their job, home, and public image mostly intact. The term is informal, and clinicians describe the same picture as high-functioning AUD. It is not a separate diagnosis, and it does not mean the drinking is safe. The person still meets the DSM-5-TR criteria.
The "functioning" label can hide a lot. Common patterns include:
Keeping a strong work record while drinking heavily at night or on days off
Never missing a shift, but needing a drink to sleep or to switch off
Drinking only after duty, yet unable to skip a day
Becoming irritable, distant, or unpredictable at home
For first responders, this is especially common. The job rewards composure, and admitting a problem can feel like a threat to a career. Many functioning drinkers carry on for years because nothing breaks in public, while tolerance climbs and relationships absorb the damage.
Being high-functioning is not a stage of its own. It can describe someone in the early, middle, or even late stages. The risks to the liver, heart, and mind keep building whether or not anyone notices.
End Stage Alcoholism: Late-Stage Complications and Risks
End stage alcoholism is the late phase, where long-term drinking has caused serious physical, mental, and social harm. It typically matches severe AUD, with 6 or more criteria, and drinking often continues despite clear damage.
According to NIAAA's page on alcohol's effects on the body, long-term heavy drinking can cause:
Liver disease: fat buildup, inflammation including hepatitis, scarring known as cirrhosis, and liver cancer
Cardiomyopathy: a weakened heart muscle
Pancreatitis: painful swelling of the pancreas, which can become chronic and raise the risk of pancreatic cancer and diabetes
Brain and nerve damage: changes in mood, thinking, coordination, and memory, plus a higher stroke risk
One severe form of brain damage is tied to thiamine (vitamin B1) deficiency, often called wet brain. You can read the full picture in our post on wet brain.
Other late-stage signs include yellowing of the skin or eyes, swelling in the abdomen, repeated falls, confusion, tremors, hospital visits, and losing a job or family. Drinking may serve only to prevent withdrawal.
NIAAA reports that excessive drinking caused about 178,000 U.S. deaths per year in 2020 and 2021, and that alcohol-associated liver disease was the first-listed cause among them.
Late-stage does not mean hopeless. NIAAA notes that the majority of people with AUD reduce or resolve their drinking problems over time. Medical care and a safe withdrawal plan matter most here.
Why First Responders Are at Risk for Alcohol Problems
Repeated exposure to death and injury, overnight shifts, broken sleep, and moral injury all raise the pull toward alcohol as a fast way to turn the mind off.
A 2026 study in the journal Fire reviewed earlier work showing that firefighters drink at higher rates than the general population. It cited a 2011 study of one department in which 58% reported binge drinking, compared with a 20% national 30-day rate for U.S. adults. It also cited a 1993 study in which 29% of firefighters screened positive for alcohol use disorders on a screening tool. The authors link chronic stress, trauma exposure, and shift work to higher alcohol misuse.
Culture plays a role too. In many stations and squads, drinking after a tough call is how the crew bonds and debriefs. Some firefighters call these gatherings "choir practice." Police, EMS, corrections, and military communities have their own versions. When everyone drinks, heavy use looks normal.
Night shifts blur the clock, so "after work" can mean 8 a.m. Peers rarely comment on drinking because they drink too. Fear of fitness-for-duty reviews keeps people quiet, and trauma symptoms such as nightmares and hypervigilance drive self-medication.
Signs of Alcoholism in a Loved One: What Families Can Notice
Families often see the stages before the drinker admits them. The signs of alcoholism at home are usually changes in routine and mood, not dramatic scenes. Look for patterns that last more than a few weeks.
Common things a spouse, parent, or crew member notices:
Alcohol in every plan, from days off to family events
Bottles hidden in the garage, truck, or locker
Mood swings between irritable and flat, especially before the first drink
Broken promises to cut back
Pulling away from kids and friends
Defensiveness whenever drinking comes up
When you talk, choose a calm moment when the person is sober. Describe what you saw, say you are worried, and avoid labels such as "alcoholic." Expect pushback. Shame is strong in public safety, so offer to help with the first call or appointment.
Do not try to manage a heavy drinker's withdrawal at home. If someone has shakes, confusion, hallucinations, or a seizure after stopping, call 911. If you or someone you love is thinking about suicide, call or text 988.
How to Step Off at Any Stage
You can change course at any stage. The right level of care depends on how much someone drinks, whether withdrawal is a risk, and how stable life is at home and work.
Start with a medical check. A primary care doctor can screen for AUD, check liver health, judge withdrawal risk, and discuss FDA-approved medications such as naltrexone and acamprosate.
Get medically supervised withdrawal when needed. NIAAA says detox is a critical first step, but it is not, by itself, alcohol treatment. People at risk of severe withdrawal need medical supervision. Stepstone Connect is not a detox facility, and it does not prescribe medication. A physician or medical detox program handles that step first.
Add structured therapy and peer support. After withdrawal, ongoing care matters. This is where an intensive outpatient program fits: several hours of therapy per week, with the rest of life kept in place.
Plan for the long run. Cravings, stress, and old cues return, so skills for relapse prevention are part of care, not an afterthought.
Early on, a brief talk with a doctor may be enough. Later, therapy for the stress and trauma behind the drinking matters more. Life after quitting is a topic of its own.
Get Help for Alcohol Use at Any Stage
If drinking has started to cost you sleep, trust, or peace of mind, you do not have to wait for end stage to act. Stepstone Connect offers a virtual intensive outpatient program built only for first responders, with small groups of about 8, three 3-hour sessions a week, one weekly individual therapy session, and day and evening options for shift work across a 12-week program. Clinicians and retired first responders, military, and National Guard members make up the staff.
Our first responder dual diagnosis IOP treats alcohol use together with PTSD, depression, and anxiety using methods such as CBT, EMDR, and Motivational Interviewing. See how the program works, then contact our team or call (866) 518-2985 to verify your insurance benefits and talk through next steps.
Works Cited
National Institute on Alcohol Abuse and Alcoholism. "Alcohol Use Disorder: From Risk to Diagnosis to Recovery." Core Resource on Alcohol, National Institutes of Health, revised 8 May 2025.
National Institute on Alcohol Abuse and Alcoholism. "The Basics: Defining How Much Alcohol Is Too Much." Core Resource on Alcohol, National Institutes of Health, revised 8 May 2025.
National Institute on Alcohol Abuse and Alcoholism. "Alcohol's Effects on the Body." National Institutes of Health, June 2025.
Substance Abuse and Mental Health Services Administration. "Key Substance Use and Mental Health Indicators in the United States: Results from the 2025 National Survey on Drug Use and Health." U.S. Department of Health and Human Services, 2026.
National Institute on Alcohol Abuse and Alcoholism. "Alcohol-Related Emergencies and Deaths in the United States." National Institutes of Health, Mar. 2026.
Jitnarin, Nattinee, et al. "Beta Test of an Alcohol Awareness and Prevention Intervention for the U.S. Fire Service." Fire, vol. 9, no. 2, article 83, MDPI, 12 Feb. 2026.
