Hallucinogen-Induced Mood Disorder is a formal diagnostic term taken from the DSM-4/DSM-5 that is used to refer to depression/anxiety that is a result of, and comorbid with, the ongoing and/or excessive use of hallucinogens such as LSD, Peyote, etc. This term is a subdivision of Substance-Induced Mood Disorder. Substance use is known to deplete the brain’s neurochemicals; serotonin, dopamine, etc. and this is part of the physiology that creates mood disorders.