A horror trip or bad trip describes a state of intoxication triggered by substance use, which can lead to states of anxiety and panic, paranoia and, in extreme cases, suicide attempts. Such states are often triggered by psychedelic substances such as LSD, psilocybin, DMT or dissociative substances such as ketamine. However, substances such as cannabis, MDMA, amphetamine or cocaine can also trigger such experiences. The risk of such a condition can be reduced by Safer use messages and especially Drug, Set & Setting are observed. In an emergency, contact the emergency services (144).