Melanotan Tanning Injections Linked to Rare Case of Prolonged and Painful Erection
Background
Priapism is a prolonged and often painful erection that persists for several hours, unrelated to sexual stimulation, and can lead to permanent erectile dysfunction if not treated promptly. Melanotan (specifically Melanotan I or II) is a synthetic peptide analogue of alpha-melanocyte-stimulating hormone (α-MSH) primarily used for cosmetic tanning due to its ability to stimulate melanin production. While Melanotan is known to affect sexual function, its direct association with priapism is rarely documented in medical literature, creating a significant knowledge gap regarding this severe adverse effect.
Results
The patient presented to the emergency department with a painful erection that had persisted for over 12 hours. Clinical examination confirmed a rigid erection, and penile Doppler ultrasound showed signs consistent with ischemic priapism, indicating reduced blood flow. Toxicology screening was negative for other common recreational drugs or medications known to induce priapism. > This case strongly suggests a direct causal link between Melanotan use and the onset of priapism, as no other contributing factors were identified after comprehensive evaluation. Following aspiration of corporal blood and intracavernosal injection of phenylephrine, the priapism resolved within 6 hours of medical intervention, alleviating the patient's pain and restoring normal penile flaccidity. The patient reported no prior history of priapism or erectile dysfunction.
Why It Matters
This report highlights a critical, underrecognized adverse effect of Melanotan use, particularly concerning given the peptide's availability through unregulated channels. Healthcare providers, especially those in emergency medicine and urology, should be aware of this potential complication when evaluating patients presenting with priapism, particularly if there's a history of cosmetic peptide use. Increased awareness among both users and medical professionals could lead to earlier diagnosis and intervention, potentially preventing long-term complications such as permanent erectile dysfunction. Further research, including larger observational studies or case series, is warranted to better understand the incidence and mechanisms of Melanotan-induced priapism.