Symptoms
The main symptoms of delirium tremens are confusion, diarrhea, insomnia, nightmares, disorientation and agitation and other signs of severe autonomic instability (fever, tachycardia, hypertension). These symptoms may appear suddenly but can develop 2–3 days after cessation of drinking heavily with its highest peak/ intensity on the fourth or fifth day. Also, these "symptoms are characteristically worse at night". Other common symptoms include intense perceptual disturbance such as visions of insects, snakes, or rats. These may be hallucinations, or illusions related to the environment, e.g., patterns on the wallpaper or in the peripheral vision that the patient falsely perceives as a resemblance to the morphology of an insect. Unlike hallucinations associated with schizophrenia, delirium tremens hallucinations are primarily visual, in the peripheral field of vision, but are also associated with tactile hallucinations such as sensations of something crawling on the subject — a phenomenon known as formication. Delirium tremens usually includes extremely intense feelings of "impending doom". Severe anxiety and feelings of imminent death are symptomatic of DT.
DT can sometimes be associated with severe, uncontrollable tremors of the extremities and secondary symptoms such as anxiety, panic attacks and paranoia. Confusion is often noticeable to onlookers as patients will have trouble constructing simple sentences or making basic logical calculations. In many cases, people who rarely speak out of turn will have an increased tendency for gaffes even though they are sober.
DT should be distinguished from alcoholic hallucinosis, the latter occurring in approximately 20% of hospitalized alcoholics and not carrying a significant mortality. In contrast, DT occurs in 5–10% of alcoholics and carries up to 15% mortality with treatment and up to 35% mortality without treatment. DT is characterized by the presence of altered sensorium; that is, a complete hallucination without any recognition of the real world. DT has extreme autonomic hyperactivity (high pulse, blood pressure, and rate of breathing), and 35-60% of patients have a fever. Some patients experience seizures.
Read more about this topic: Delirium Tremens
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