Condition of disorientation, confused thinking, and rapid alternation between mental states.
The patient is restless, cannot concentrate, and undergoes emotional changes (e.g., anxiety, apathy, euphoria), sometimes with hallucinations. Delirium usually results from a disorder affecting the brain such as central nervous system infection, head trauma, or mental disorder. In severe cases of withdrawal from alcohol, thiamine ), and {{link=dehydration">dehydration .