1) LSD and psilocybin are being used to treat cluster headaches, a rare disorder that has been described as more painful than child birth without anaesthesia. In a recent study, 53 cluster headache patients were given psilocybin or LSD to treat their pain. 22 of 26 reported that psilocybin aborted the attacks. 25 of 48 psilocybin users and 7 of 8 LSD users reported the attacks ended sooner. Citation: Response of cluster headache to psilocybin and LSD. From the Biological Psychiatry Laboratory (J.H.H., H.G.P.) and Clinical Research Laboratory (R.A.S.), Alcohol and Drug Abuse Research Center, McLean Hospital/Harvard Medical School, Belmont, MA.
2) Studies are determining whether or not psilocybin helps treat OCD and MDMA helps treat Post Traumatic Stress Disorder. Citation: Medicine hope for psychedelic drugs.
3) An FDA approved study is underway to determine if psilocybin helps treat Stage IV cancer patientís anxiety. Citation: Stage IV cancer patients and psilocybin - Patient Interviews.