Alcohol-Induced Psychosis: Hallucinations and Paranoia in Withdrawal, How It Differs From Delirium Tremens, and When to Call 911

Hearing voices or seeing things on the second day without a drink is frightening, and the fear is justified, but not for the reason most people assume. Alcohol-induced psychosis on its own is uncommon, usually brief, and treatable. The danger is in what it can be mistaken for or turn into: delirium tremens, which looks similar from the outside and kills people who are left to sleep it off. This page explains what alcohol-induced psychosis is, when it starts and stops, how a clinician tells it from delirium, which signs mean 911 now, and what happens afterward. Every figure is from the clinical references named under each section.

The symptoms of alcohol-induced psychosis are mainly auditory hallucinations and paranoia: voices, often threatening or accusing, and a conviction of being watched, followed or plotted against.

StatPearls’ withdrawal chapter describes alcohol hallucinosis as consisting primarily of auditory hallucinations and paranoia. Visual and tactile hallucinations occur too, shapes at the edge of vision or the feeling of something on the skin, and the National Library of Medicine’s phrase for the withdrawal form is seeing or feeling things that are not there. Clinicians watch for a person responding to internal stimuli, turning toward a sound no one else hears, and for flat affect.

The feature that defines it, and that separates it from the more dangerous condition in the next sections, is that the person remains oriented. They know who they are and where they are, their memory works, and they can usually describe what they are hearing even while they believe it. The StatPearls psychosis chapter is specific that the hallucinations or delusions must be more than what intoxication or ordinary withdrawal would explain.

Source: Alcohol Withdrawal Syndrome, Canver, Newman and Gomez, StatPearls, updated February 14, 2024; Alcohol withdrawal, MedlinePlus Medical Encyclopedia, National Library of Medicine, reviewed January 1, 2025.

The difference is confusion. In alcohol hallucinosis the person hallucinates but stays oriented; in delirium tremens the person is disoriented, with fever, heavy sweating, a racing heart and severe agitation on top of the hallucinations, and it is a medical emergency.

The National Library of Medicine describes delirium tremens as a severe form of withdrawal with sudden and severe mental or nervous system changes, most often beginning 48 to 96 hours after the last drink but sometimes 7 to 10 days later. Its list runs from agitation and body tremors through sudden severe confusion, fever, hallucinations, bursts of energy, sensitivity to light and sound, and stupor. It occurs most often in people with a history of alcohol withdrawal and in those who have drunk heavily for many years, and it requires a hospital stay.

The mortality figures are why the distinction matters. StatPearls notes that the death rate from withdrawal delirium was historically as high as 20 percent and is now around 1 percent with prompt diagnosis and treatment, which is to say that the outcome depends almost entirely on whether the person is in a hospital when it happens. Benzodiazepines given early reduce the risk of progression. The seizures and DTs timeline page covers that progression in detail.

Source: Delirium tremens, MedlinePlus Medical Encyclopedia, National Library of Medicine, reviewed January 1, 2025; Alcohol Withdrawal Syndrome, StatPearls, 2024.

Alcohol causes psychosis through changes in brain signaling that no single theory fully explains. The clinical references point to dopamine and serotonin disturbance in long-term heavy drinkers, and to the rebound overactivity of the nervous system in withdrawal.

StatPearls says the exact cause is unknown and the leading hypotheses involve increased dopamine activity and altered dopamine receptors, with serotonin and amino acid abnormalities also implicated, and imaging studies showing abnormal blood flow in several brain regions of people who hallucinate in alcohol dependence. The withdrawal form is easier to picture: the brain adapts to alcohol’s sedation by turning up its own excitatory signaling, and when the alcohol is removed that signaling runs unopposed, producing tremor, racing heart, seizures and, in a minority, hallucinations.

Who it happens to is better described than why. The Finnish study found higher risk with younger age at onset of dependence, low socioeconomic status, a father with mental health or alcohol problems, and multiple previous hospital treatments. StatPearls adds living alone and being unemployed. And a history of complicated withdrawal, meaning a past episode with seizures or delirium, is the strongest single predictor that the next withdrawal will be complicated too.

Source: Alcohol-Related Psychosis, StatPearls, 2023; Alcohol-induced psychotic disorder and delirium in the general population, Perälä et al., 2010.

Briarwood treats withdrawal hallucinations inside medically supervised alcohol detox, where a physician’s benzodiazepine protocol, thiamine, and nursing observation through the night are the tools that keep hallucinosis from becoming delirium.

The order of events matters. Briarwood is a detox center, not a hospital. A person who is already confused, feverish or seizing belongs in an emergency department first, and Briarwood’s admissions team will say so on the phone; detox begins once they are stable. A person who is hallucinating but oriented, or who has a history of complicated withdrawal and has not yet stopped drinking, is exactly who inpatient detox in Austin and Houston exists for, because the 48-to-72-hour window where delirium begins is spent under observation rather than at home. The San Antonio program is outpatient and is not the right setting for anyone with these symptoms.

Hallucinosis in withdrawal is also a signal about what comes next. It marks a dependence severe enough that the drinking has to stop entirely, and the step after detox is arranged before discharge for that reason. Cost and insurance covers what a stay costs with and without coverage. Admissions is answered at every hour, and if the question is whether someone’s voices are withdrawal or something worse, the first call is the place to ask it.