Fluctuating level of consciousness is seen in: (A) Hysteria, (B) Delirium, (C) Dementia, (D) Mania
Answer is B. Delirium is characterized by an acute decline in both the level of consciousness and cognition with paicular impairment in attention. Reference: Kaplan & Sadock's Synopsis of Psychiatry: Behavioral Sciences/Clinical Psychiatry, 11th Edition, page 697.