Delirium

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Delirium
Emotional or personality changes
Movements triggered by changes in the nervous system (psychomotor restlessness)
Changes in motor activities, movement (for example, may be lethargic or slow moving)
Decrease in short-term memory and recall
Alertness may vary, usually more alert in the morning, less alert at night (see drowsiness)
Altered sleep patterns, drowsiness
Altered level of consciousness or awareness
Changes in sensation and perception (increases the disorientation)
Disorientation to time or place
Disorganized thinking, evidenced by
Attention disturbance
Delirium is a condition of severe confusion and rapid changes in brain function. Delirium involves a rapid alternation between mental states (for example, from lethargy to agitation and back to lethargy), with attention disruption, disorganized thinking, disorientation, changes in sensation and perception, and other symptoms.
Concentration problems
Inability to maintain goal directed, purposeful thinking or behavior
Inability to stop speech patterns or behaviors
Incoherent speech
May come before illusions or hallucinations
Unable to remember past events (retrograde amnesia)
Unable to remember events since onset of delirium (anterograde amnesia)
Irritability
Euphoria
Depression
Apathy
Anger
Anxiety