<unk>  may result from drug side effects or from a relatively sudden brain dysfunction. Acute<unk>  is often called delirium (or "acute<unk> al state"), although delirium often includes a much broader array of disorders than simple<unk> . These disorders include the inability to focus attention; various impairments in awareness, and temporal or spatial dis-orientation. Mental<unk>  can result from chronic organic brain pathologies, such as dementia, as well. Other * Acute stress reaction * Alcoholism * Anemia * Anticholinergic toxicity * Anxiety * Brain damage * Brain tumor * Concussion * Dehydration * Encephalopathy * Epileptic seizure * Depression * Fatigue * Fever * Brain injury * Heat stroke * Hypoglycemia * Hypothermia * Hypothyroidism * Jet lag * Kidney failure * Kidney infection (pyelonephritis) * Lactic acidosis * Lassa fever * Lewy body dementia * Listeria * Lyme disease * Meningitis * Postpartum depression & Postpartum psychosis * Psychotic Disorder * Reye's syndrome * Rocky Mountain spotted fever (RMSF) * Schizophrenia * Sick building syndrome * Sleep apnea * Stroke * Yellow fever * STDs & STIs * Streptococcal Infections * Toxicity * Toxic shock syndrome * Transient ischemic attack (TIA, Mini-Stroke) * Acute Porphyria * West Nile virus Differential diagnosis The most common causes of drug induced acute<unk>  are dopaminergic drugs (used for the treatment of Parkinson's disease), diuretics, tricyclic, tetracyclic antidepressants and benzodiazepines or alcohol. The elderly, and especially those with pre-existing dementia, are most at risk for drug induced acute<unk> al states. New research is finding a link between vitamin D deficiency and cognitive impairment (which includes "foggy brain").
Confusion
Sedation
Neurosis
Snatiation
Disorders of consciousness
Psychogenic amnesia
Altered state of consciousness
Hypnoid state