Which symptom is characteristic of someone on a hallucinogenic drug?

One of the most characteristic symptoms of someone under the influence of a hallucinogenic drug is the presence of visual and auditory hallucinations. Individuals may see, hear, or feel things that are not present in reality. Other common symptoms include altered perception of time, enhanced sensory experiences, mood swings, and possible disconnection from one’s sense of self. These effects can vary significantly based on the type of hallucinogen used, dosage, and individual psychological factors.

For example, substances like LSD and psilocybin (found in magic mushrooms) can lead to profound alterations in perception and cognition, creating vivid imagery and sensations. Additionally, users might experience anxiety or paranoia during their trip. Overall, the key feature is the altered perception of reality, which can be both intense and profoundly impactful.