A man was left with a painful permanent erection which left him in hospital for more than two weeks.
Danny Polaris said he was told by a nurse to try and erection enhancing drug which she then injected into his penis.
The Swansea man said accepting the drug was "one of the worst decisions of his life".
Before seeking medical help, he even went to Berlin Pride with his a wine cooler wrapped around his penis, but the next day he was taken to hospital "screaming in pain".
The jazz singer and sex columnist has since been diagnosed with priapism, Wales Online reports.
Speaking to PinkNews, he said: "I was partying at a club, and I took a Viagra before I went.
"I met a nurse, who I went home with, who ended up injecting an erection enhancer into my c**k.
"I didn't want to do it to start with but I consented. I thought, why not, what could possibly go wrong? It's one of the worst decisions of my life."
Danny has undergone a number of painful treatments to try and give him some relief.
These include pushing needles through the side of his penis five times a day and surgery involving taking a vein from his leg to draw the blood away.
But all of these efforts have proved unsuccessful and his is still in hospital with the erection.
He said: "Some days I wake up and I just cry about how stupid I was, about what I've lost, about what's going to happen to me.
"I don't know how much it's going to cost to get my penis working how it used to be working.
"Sex is very important to me. I'm a sex writer, I write erotica and edit erotica. I need all the help I can get.
"I don't know what's going to happen in the future... will I have sex again?"
His friend has set up a Go Fund Me page to help pay for his treatment and recovery costs.
Danny finished: "My advice to anyone with a penis is be careful when you take Viagra and don't let anyone come near your c*** with an injection because it's not worth it."
For the latest news in and around Bristol, check back on Bristol Live's homepage .
