Which symptom describes experiences lacking external stimulus but subjectively indistinguishable from real perception?

• A. Hallucinations
• B. Delusions of Control
• C. Hypnagogic Hallucinations
• D. Disorganized Thinking (Speech)

Answer: (A)

Hallucinations are sensory experiences that occur without any external stimulus but feel subjectively real. That means you perceive something—sounds, sights, smells, or other sensations—as if it were truly there, even though nothing in the external environment would produce it. The description in the question matches this definition exactly: a perceptual experience without an external source, indistinguishable from a real perception.

The other options describe different phenomena. Delusions of Control involve beliefs that one’s thoughts, feelings, or actions are being controlled by someone or something else, not a sensory experience. Disorganized thinking refers to disrupted thought processes and incoherent or illogical speech, not to sensory experiences. Hypnagogic hallucinations are a specific type of hallucination that occurs at sleep onset; while they are hallucinations, the choice that captures the general phenomenon of a sensory experience without external input is the broader term, which is hallucin­ations.