Changes That May Indicate Delirium

Type of Change

Examples

Cognitive function

• decreased concentration
• slow responses
• memory impairment
• disorganized thinking
• disorientation
• reduced level of consciousness
• shifting attention

Perception

• visual or auditory hallucinations

Physical function

• reduced mobility
• reduced movement
• motor restlessness
• agitation
• changes in appetite
• sleep disturbance

Social behaviour

• lack of cooperation with reasonable requests
• withdrawal
• alterations in communication, mood, and/or attitude