History Taking in Acute Alcohol Intoxication
When evaluating a patient with acute alcohol intoxication, immediately assess quantity and timing of alcohol consumption, pattern of drinking (including binge episodes), concurrent substance use, trauma history, and underlying alcohol use disorder using structured screening tools like AUDIT or CAGE.
Critical Initial History Elements
Immediate Assessment Priorities
The focused history must rapidly identify life-threatening complications while establishing the context for appropriate disposition and intervention 1, 2.
Essential immediate questions include:
- Quantity consumed: Estimate grams of alcohol ingested and timeframe of consumption
- Timing of last drink: Critical for predicting peak intoxication and withdrawal risk 3
- Drinking pattern: Was this binge drinking (≥5 drinks for men, ≥4 for women within 2 hours) or chronic heavy use? 4
- Concurrent substances: Other drugs, medications, or illicit substances that may complicate presentation 5, 1
- Trauma history: Falls, assaults, head injury - intoxication masks traumatic injuries 6
Alcohol Use Pattern Assessment
Quantify weekly consumption systematically 7:
- Men <65 years: Heavy drinking defined as >14 standard drinks (196g) per week
- Women and men ≥65 years: Heavy drinking defined as >7 standard drinks (112g) per week
- Document binge drinking episodes separately
A common pitfall: Patients often minimize or deny consumption 8. Collateral history from family, friends, or emergency personnel is invaluable 6.
Screening for Underlying Alcohol Use Disorder
Acute intoxication represents a sentinel event requiring AUD screening 1, 2. The AUDIT questionnaire is the gold standard screening tool 3, 9.
AUDIT Scoring and Interpretation
The 10-item AUDIT assesses 3:
- Questions 1-3: Quantity and frequency of consumption
- Questions 4-6: Alcohol dependence symptoms
- Questions 7-10: Harmful drinking consequences
- 8-14 points: Hazardous/harmful alcohol consumption
- ≥15 points: Likely alcohol dependence (moderate-severe AUD)
- For women and elderly: Lower threshold of ≥4 may be appropriate
Time-saving alternatives 4:
- AUDIT-C (first 3 questions only): Positive if ≥4 in men, ≥3 in women 7
- CAGE questionnaire: ≥2 positive responses indicates AUD 9, 4
DSM-5 Criteria Integration
Document symptoms meeting DSM-5 AUD criteria 3:
- Tolerance (need for increased amounts)
- Withdrawal symptoms or drinking to avoid withdrawal
- Drinking larger amounts/longer than intended
- Failed attempts to cut down
- Time spent obtaining/using/recovering from alcohol
- Social/occupational problems due to drinking
- Continued use despite physical/psychological harm
Severity classification:
- Mild: 2-3 criteria
- Moderate: 4-5 criteria
- Severe: ≥6 criteria
Medical and Social History
Past Medical Complications
Document alcohol-related sequelae 10, 11:
- Alcoholic hepatitis or cirrhosis
- Alcohol neuropathy
- Wernicke-Korsakoff syndrome
- Prior episodes of acute intoxication
- History of withdrawal seizures or delirium tremens
Assess withdrawal risk 3: Previous severe withdrawal (CIWA-Ar score ≥15) predicts future severe episodes requiring pharmacological intervention.
Psychosocial Context
Critical social history elements 3:
- Failure to fulfill work/school/home obligations due to drinking
- Social/interpersonal problems caused by alcohol
- Hazardous use situations (driving while intoxicated)
- Legal problems related to alcohol
- Prior treatment for alcohol dependency and outcomes 10
Concurrent Medical Conditions
Screen for conditions affecting management 11, 5:
- Liver disease (affects medication metabolism)
- Cardiac disease (alcohol cardiomyopathy risk)
- Diabetes (hypoglycemia risk with intoxication)
- Psychiatric disorders (depression, anxiety commonly co-occur)
- Malnutrition status (thiamine deficiency risk) 12
Practical Implementation Strategy
For emergency department settings 13, 1:
- Stabilize first: Ensure airway, breathing, circulation before detailed history
- Brief screening during initial assessment: Use AUDIT-C or CAGE (2-3 minutes)
- Obtain collateral information: EMS reports, family, witnesses
- Serial reassessment: Intoxication masks evolving pathology; repeat examinations are mandatory 6
- Document for disposition: History determines need for hospitalization, detoxification, or specialty referral 14
A critical caveat: Behavioral signs alone are unreliable for assessing intoxication severity - structured assessment combined with clinical judgment is essential 15. Blood alcohol concentration correlates weakly with clinical presentation due to tolerance 14.
The ultimate goal: Use acute intoxication as an opportunity to identify underlying AUD and facilitate referral to addiction services for definitive treatment 1, 2, 12. Brief interventions initiated during acute care improve long-term outcomes 16.