For DSM-V diagnosis of hallucinogen intoxication, how many symptoms must be present?

In the DSM-V, the diagnosis for hallucinogen intoxication requires the presence of at least two specific symptoms. These can include perceptual changes (such as hallucinations), increased heart rate, sweating, and other physiological responses, as well as psychological effects like altered sense of time or increased sensory perception. Meeting this threshold is important for an accurate diagnosis, as it ensures that the symptoms are significant enough to impact the individual's functioning. Therefore, the requirement for two symptoms emphasizes the need for a clinical picture that reflects the actual state of intoxication, distinguishing it from other mental health concerns or substance use issues that may present with fewer or different symptoms.