Is the US experiencing an incipient epidemic of hallucinogen use?

NHSDA and MTF survey data indicate "epidemic"-like growth in hallucinogen u se from 1992-1996 and associated increases in cocaine, crack, heroin and am phetamine use. These trends might have resulted from a proliferation of rav es and dance clubs in the U.S. as occurred in Europe and elsewhere, althoug h in contrast to evidence regarding European experiences the American epide mic involves primarily teens as opposed to persons in their twenties and in volves primarily use of LSD as opposed to MDMA. This analysis highlights th e need for further research into the context, significance, and consequence s of these recently popular American drug use practices.