Danny Polaris, a sex columnist and jazz musician who took an unprescribed erection enhancing drug into his penis before a late night hook-up.
The drug, which makes blood vessels expand, was injected into his penis and there was an immediate reaction.
Polaris, from Wales, initially put off seeking help and went to a Pride festival with a wine cooler wrapped around his erect penis.
His life-threatening erection has not gone down yet – and was told there was a possibility of amputation.
Doctors have tried pushing a 7 inch plastic nail through his urethra, in a painful procedure without anaesthetic.
They also jabbed needles into his penis to withdraw blood, but so far, nothing has helped.
His condition has serious complications including potentially life-threatening blood clots.
Mr Polaris, who is gay, wondered “what could possibly go wrong” but now confesses the decision is one of the “worst he’s made in his life”.
On the night his penis was injected with the unprescribed enhancer, Polaris met a nurse at a club in Berlin.
Polaris, who had already taken a viagra, said the man was keen to give him the injection and he allowed him to do it because he assumed the man knew what he was doing, being a medical nurse.
But when was injected there was an immediate reaction between it, his HIV medication and the Viagra.
He told Pink News he had a priapism – a constant erection – before but he wasn’t able to kill the erection.
His penis was still erect when he woke up the next morning, the 27th of July.
But instead of going to the hospital, he went to Berlin Pride with his “flatmate’s wine cooler wrapped around his penis and shoved down his shorts”.
He had sought advice from a doctor who said it was fine to wait until Monday morning before seeking medical help.
But his penis was still erect the day after he attended Pride and woke up in at 5am.
Mr Polaris told GCN he contacted the man who gave him the drug, who told him to use ketamine, but things got worse.
By July 28th, he was barely able to walk and it felt like his penis was going to burst.
He was then rushed to hospital in an ambulance while screaming in pain.
Mr Polaris told Pink News the pain for the latter treatment was a “ten” on the pain scale.
He lost so much blood that he required a transfusion and the pain has been so excruciating that he has blacked out.
Surgeons have even performed an emergency operation to take a vein out of his upper thigh and connect it to the base of his penis in a bid to draw blood away, which worked, but within a half an hour his penis was erect again.
A GoFundMe page has now been set up by Polaris’s friends help cover costs that he will face while he is in hospital and recovering.
So far they have raised more than £2,000.
The GoFundMe page says his priapism is “potentially life-threatening” and he “may have been close to death”.
“He is being brave, focused and is a survivor! But however positive he’s trying to be, he’s also traumatised and often crying with extreme stress and anxiety,” the page says.