Why does full clarity of consciousness, despite ongoing hallucinations, matter so much when assessing this presentation?
The phenomenon's own text is built around this exact distinction: hallucinosis occurs with a clear sensorium, while delirium does not. Establishing that consciousness is clear therefore does real diagnostic work — it rules out a clouded confusional process and points toward the kind of organic or substance-related cause, such as chronic heavy alcohol use, that hallucinosis is specifically associated with.
References
- Casey, P. & Kelly, B. (2019). Fish's Clinical Psychopathology, 4th ed. Ch. 3, 'Disorders of Perception'.