What symptom is characteristic of stimulants rather than hallucinogens?

Stimulants are substances that increase activity in the brain, leading to heightened alertness, increased energy, and feelings of euphoria. These effects result from stimulants enhancing the release of neurotransmitters, such as dopamine and norepinephrine, that contribute to feelings of pleasure and motivation. Euphoria is notably associated with stimulant use, making it a key symptom distinct from the effects of hallucinogens.

In contrast, hallucinogens are typically characterized by alterations in perception, mood, and cognitive processes rather than an increase in energy or alertness. Visual distortions, auditory hallucinations, and synesthesia—where one sensory modality is perceived as another—are common experiences associated with hallucinogenic substances. These effects do not typically overlap with the primary effects of stimulants but are instead indicative of a different class of drugs that alter perception and consciousness rather than elevate mood through euphoria.