Delirium Tremens

Alcohol withdrawal can kill — but it's not the early tremors that are lethal. Delirium tremens emerges 48-96 hours after the last drink, and missing that timeline costs lives.

Delirium tremens (DTs) is the most severe and life-threatening form of alcohol withdrawal, distinct from the earlier stages covered by CIWA-based management. DTs typically onset 48–96 hours after the last drink, peaking around 72 hours — well after the initial tremors, anxiety, and diaphoresis that begin within 6–24 hours. The hallmark triad is severe autonomic instability (tachycardia, hypertension, hyperthermia), global confusion with disorientation, and vivid hallucinations (often visual — classically insects or animals). Seizures may precede or accompany DTs but are a separate withdrawal phenomenon that peaks at 12–48 hours. Mortality without treatment is 15–20%; with ICU-level care it drops to 1–5%. Nursing priorities center on continuous monitoring of vitals, neurological status, and level of consciousness. The patient requires a calm, well-lit environment, seizure precautions, IV benzodiazepines (typically diazepam or lorazepam per protocol), fluid and electrolyte replacement, and thiamine administration before glucose to prevent Wernicke encephalopathy.

Key Distinctions

Don't confuse early withdrawal symptoms (6–24 hours: tremors, mild anxiety, elevated HR) with DTs (48–96 hours: delirium, autonomic storm, hallucinations) — DTs is a separate, escalated syndrome, not just worse shaking. Students mix up withdrawal seizures (peak 12–48 hours) with DTs onset — seizures can occur independently and often precede DTs. Always give thiamine before IV dextrose; reversing this order can precipitate Wernicke encephalopathy.

Clinical Pearl

Think '48-72-96': DTs start around 48 hours, peak near 72, and the danger window extends to 96 hours. If the patient seems fine at hour 24, you're not out of the woods.