Can hallucinogenic drugs cause anxiety in teenagers?

Yes: Hallucinogens result in euphoria. But commonly cause agitation, confusion, anxiety and paranoia esp. In a developing teenager brain.

Yes: Hallucinogenic drugs include lsd, psilocybin, mescaline, marijuana, and others. All can cause hallucinations and profoundly distort reality perception. Lsd and regular marijuana use can trigger underlying mental disorders -- producing delusions, paranoia and schizophrenia-like states. They can also produce extreme anxiety and panic attacks, both during intoxication and also for some time after.