What Is Alcohol Use Disorder (AUD)?

AUD vs. “Alcoholism”: What's the Difference?

The term “alcoholism” is commonly used but is not a clinical diagnosis. The DSM-5 replaced the previous categories of “alcohol abuse” and “alcohol dependence” with a single diagnosis — alcohol use disorder — in 2013. This shift reflected research showing that these conditions exist on a continuum rather than as distinct categories.

AUD is diagnosed on a spectrum of severity:

• Mild AUD: 2–3 criteria met
• Moderate AUD: 4–5 criteria met
• Severe AUD: 6 or more criteria met

This spectrum model means that AUD includes a wide range of experiences — from someone whose drinking is causing early-stage problems at work or in relationships, to someone with decades of heavy use and physical dependence.

DSM-5 Criteria for Alcohol Use Disorder

AUD is diagnosed when at least 2 of the following 11 criteria are present within a 12-month period:

1. Drinking more or for longer than intended
2. Persistent desire or unsuccessful efforts to cut down or control drinking
3. Spending a lot of time obtaining, using, or recovering from alcohol
4. Craving — a strong desire or urge to drink
5. Failure to fulfill major role obligations at work, school, or home due to drinking
6. Continued drinking despite persistent social or interpersonal problems caused by alcohol
7. Giving up or reducing important activities because of drinking
8. Using alcohol in physically hazardous situations
9. Continued drinking despite knowing it's worsening a physical or psychological problem
10. Tolerance — needing significantly more to achieve the same effect
11. Withdrawal — experiencing withdrawal symptoms or drinking to avoid them

Tolerance and withdrawal (criteria 10–11) specifically indicate physiological dependence — a more severe presentation that typically warrants medical supervision during any reduction in drinking.

How Is AUD Screened?

The AUDIT (Alcohol Use Disorders Identification Test) is the WHO's gold-standard screening tool for alcohol use problems. A score of 8 or higher indicates hazardous or harmful use; 20 or higher suggests possible dependence.

The AUDIT-C is a briefer 3-question version focused on consumption patterns. The CAGE-AID is a simple 4-question screen used widely in clinical settings.

Screening tools identify a pattern worth paying attention to. Diagnosis requires a clinical evaluation.

What Causes Alcohol Use Disorder?

AUD has no single cause. It develops through a complex interaction of factors:

Genetic factors account for approximately 40–60% of the risk for AUD (NIAAA, 2021). Having a first-degree relative with AUD meaningfully increases risk.

Neurobiological factors: Alcohol affects multiple neurotransmitter systems — GABA, glutamate, dopamine, and opioid pathways. With repeated heavy use, the brain adapts to alcohol's presence, leading to tolerance and withdrawal when use stops.

Psychological factors: Anxiety, depression, PTSD, and trauma history all significantly increase risk. Many people with AUD describe initially using alcohol to manage emotional pain — a pattern that becomes self-reinforcing over time.

Environmental factors: Early initiation of drinking (before age 15), access to alcohol, peer drinking norms, and chronic stress all elevate risk.

Social factors: Social isolation, lack of structured activity, and environments where heavy drinking is normalized.

None of these factors cause AUD on their own. They interact — and the presence of multiple risk factors substantially increases vulnerability.

The Relationship Between AUD and Mental Health

AUD and mental health conditions co-occur at high rates:

This co-occurrence runs in both directions. Mental health conditions increase risk for AUD (self-medication), and heavy alcohol use worsens depression, anxiety, and PTSD symptoms — creating a reinforcing cycle that makes both conditions harder to treat.

Effective treatment addresses both simultaneously. Treating only the AUD without addressing underlying mental health conditions leads to higher relapse rates (Quello et al., 2005).

Signs That Alcohol Use May Be a Problem

You don't need to meet full AUD criteria for alcohol to be worth examining in your life. Consider reaching out if:

• You often drink more than you planned
• You've tried to cut back and struggled
• You think about drinking frequently
• Alcohol is your primary coping tool for stress, anxiety, or sleep
• People who care about you have expressed concern
• You've experienced consequences (work, relationship, health) but continued drinking
• You feel uncomfortable going long periods without drinking
• Your tolerance has noticeably increased over time

The AUDIT can help you look at your pattern more systematically. A score in the hazardous or harmful range is worth taking seriously — not as a verdict, but as information.

How Is Alcohol Use Disorder Treated?

AUD has multiple effective treatment options. The best approach depends on severity, personal preferences, co-occurring conditions, and what's been tried before.

Medical Detox

For people with significant physical dependence, medically supervised withdrawal is the essential first step. Alcohol withdrawal can be medically serious — unlike withdrawal from most other substances, it can cause seizures and, in severe cases, be life-threatening. Please consult a healthcare provider before significantly reducing or stopping heavy, long-term alcohol use.

Medications

Three medications are FDA-approved for AUD:

• Naltrexone — reduces cravings and the rewarding effects of alcohol. Available as a daily pill or monthly injection (Vivitrol). Strong evidence base.
• Acamprosate — reduces withdrawal-related discomfort and protects sobriety. Typically started after detox.
• Disulfiram (Antabuse) — creates an unpleasant physical reaction if alcohol is consumed. Effective for people with high motivation and external support.

Medications for AUD are significantly underutilized — only about 8% of people with AUD receive any pharmacological treatment (Mark et al., 2009).

Psychotherapy

Cognitive Behavioral Therapy (CBT) for substance use disorders targets triggers, coping skills, and relapse prevention. Well-established evidence base.

Motivational Enhancement Therapy (MET) is particularly effective for people ambivalent about change — it meets people where they are rather than requiring readiness to stop.

12-Step facilitation and peer support (AA, SMART Recovery) — strong evidence for peer support as an ongoing recovery resource, particularly for maintaining long-term sobriety.

Level of Care

AUD treatment occurs across a spectrum of intensity:

• Outpatient counseling — weekly sessions while continuing daily life
• Intensive Outpatient Programs (IOP) — typically 9–12 hours/week of structured programming
• Partial Hospitalization (PHP) — near-daily programming without overnight stay
• Residential/inpatient treatment — 24/7 structured environment; appropriate for severe presentations or unsafe home environments

The right level of care depends on your specific situation — a counselor or physician can help you determine what makes sense.