Turns out that injecting semen into your arm doesn't cure back pain after all

A man in Ireland repeatedly injected semen into his arm in the hopes that it would cure his back pain. He instead got a subcutaneous abcess and had to get professional help. [via Gizmodo]
Drs. Dunne, Murphy and Rutledge report:
A 33 year old male was seen complaining of severe, sudden onset lower back pain. He reported lifting a heavy steel object 3 days prior and his symptoms had progressed ever since. This gentleman had a history of chronic low back pain without neurology. Thorough physical exam of the upper and lower limbs revealed an erythematous papule with a central focus on the medial aspect of his right upper limb. His ASIA score for neurology was normal and non-contributory. The patient disclosed that he had intravenously injected his own semen as an innovative method to treat back pain. He had devised this “cure” independent of any medical advice.... The case also demonstrates the risks involved with medical experimentation prior to extensive clinical research in the form of phased trials inclusive of safety and efficacy assessments.