“People with childhood maltreatment histories, on average, report lower levels of PTSD symptoms, complex PTSD (#CPTSD) symptoms, and internalized shame and higher levels of connectedness to themselves, others, and the world after using psychedelics with therapeutic intent at organized group ceremonies or at raves or other electronic dance music events.”
https://www.psypost.org/taking-psychedelics-at-raves-and-ceremonies-may-help-heal-childhood-trauma/

Taking psychedelics at raves and ceremonies may help heal childhood trauma
Adults with a history of childhood trauma who use psychedelics at raves or ceremonies may experience mental health improvements. New research suggests these communal settings are associated with reductions in PTSD symptoms and feelings of shame.