The American Delirium Society is a community of professionals dedicated to improving delirium care. This includes suicidal ideation, psychosis, delirium, or intoxication. Adverse effects include tachycardia, hypertension, agitation, delirium, and hallucinations. They can occur during acute intoxication or withdrawal with the potential of having delirium tremens. If delirium tremens occurs, aggressive treatment improves outcomes. This combined with increased noradrenergic activity results in the symptoms of delirium tremens. Chronic severe orthostatic hypotension may present as fluctuating cognition/delirium. These are substances that produce casualty effects through mental disturbances such as delirium or hallucination. Russian composer Modest Mussorgsky died of delirium tremens. The symptoms eventually progress to delirium, and coma. The association between delirium and dementia is complex. Rarely, it can cause ototoxicity, delirium and mania. This leads to severe paranoia, delirium, and nosebleeding. A sense of heat, headache, delirium, rapid pulse, and intense thirst accompanied the sweat. A violent fever with fierce delirium came on.