Indoleamine Hallucinogens in Cluster Headache: Results of the Clusterbusters Medication Use Survey

Schindler, E. A., Gottschalk, C. H., Weil, M. J., Shapiro, R. E., Wright, D. A., & Sewell, R. A. | Journal of psychoactive drugs | 23 November 2015

The use of illicit drugs as self-medication in the treatment of cluster headache: Results from an Italian online survey

Di Lorenzo, C., Coppola, G., Di Lorenzo, G., Bracaglia, M., Rossi, P., & Pierelli, F. | Cephalalgia | 22 April 2015

Peak experiences and the afterglow phenomenon: When and how do therapeutic effects of hallucinogens depend on psychedelic experiences?

Majić, T., Schmidt, T. T., & Gallinat, J. | Journal of Psychopharmacology | 9 February 2015

Psilocybin – Summary of knowledge and new perspectives

Tylš, F., Páleníček, T., & Horáček, J. | European Neuropsychopharmacology | 17 December 2013

The non-hallucinogen 2-bromo-lysergic acid diethylamide as preventative treatment for cluster headache: An open, non-randomized case series

Karst, M., Halpern, J. H., Bernateck, M., & Passie, T. | Cephalalgia | 26 Mar 2010

Unauthorized Research on Cluster Headache

Sewell, R. A. | The Entheogen Review | December 2008

Response of cluster headache to psilocybin and LSD

Sewell, R. A., Halpern, J. H., & Pope, Jr., H. G. | Neurology | 27 June 2006