This study is set up to better understand the current use of psychedelics in France in the general population. The present focus on individuals who have used any type of psychedelic drug in order to suppress or alleviate a psychiatric symptom in the context of a diagnosed pathology. The data are collected during a semi-structured interview and then studied in a thematic analysis.

Inclusion Criteria:

• Patients diagnosed with a psychiatric disorder by a psychiatrist or general practitioner
• Patients used psychedelic or related substances in order to treat psychiatric symptoms
• Patients have given their oral non-opposition
• Patients affiliated to a social security scheme

Exclusion Criteria:

• Patients who don't speak or understand French
• Patients under protection, guardianship or curators

Adults patients self-administering psychodelic substances for therapeutic purposes