Background: Patients diagnosed with major depressive disorder (MDD) who fail to respond to two or more antidepressants are often considered to have treatment-resistant depression (TRD). Many of the current options for TRD have significant side effect profiles, are expensive, and are difficult to access. There has been a revival of psychedelic research in recent years that shows promising results in the treatment of TRD.
Case presentation: Here, the case of a 43-year-old man with TRD is presented. TRD symptoms were greatly interfering with his life. He underwent psychological testing, lab work, adequate trials of numerous medications, transcranial magnetic stimulation (TMS), and electroconvulsive therapy, all without adequate relief of his symptoms. The patient began self-administering a microdosing regimen of psilocybin and experienced significant improvement of MDD symptoms, as characterized by Hamilton Depression Rating Scale (HDRS).
Discussion: In recent years, multiple randomized, controlled trials (RCTs) have shown the benefit of psilocybin in the treatment of varying types of depression. One trial evaluated psilocybin and escitalopram as treatments for depression, and psilocybin was found to be superior.
Conclusion: This case suggests the possible benefit of psilocybin in the setting of TRD, as outlined in recent research. Additional research is needed to confirm these observations.
Keywords: Depression; MDD; psilocybin; treatment-resistant.
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