Which sedative has side effects including angry child syndrome and hallucinations?

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Paradoxical reactions to sedatives in children can cause the opposite of the intended calm effect — agitation, disinhibition, and sometimes perceptual changes. Midazolam, a fast-acting benzodiazepine commonly used for pediatric sedation, is well known for this pattern. While it typically provides anxiolysis and amnesia, some kids exhibit agitation described as angry child syndrome, and in rare cases may experience hallucinations or other perceptual disturbances. Morphine and naloxone don’t fit this profile: morphine is an opioid whose main concerns are respiratory depression, nausea, and sedation, not paradoxical agitation; naloxone is an opioid antagonist that reverses effects and can actually trigger withdrawal or agitation, not provide a sedative effect with this unusual side‑effect pattern. Diazepam is another benzodiazepine, but the specific combination of angry, agitated behavior with hallucinations is most classically linked to midazolam in pediatric use.