A man claims he has only 100 orgasms before he loses his ability to get an erection forever.

The 34-year-old, known only as ‘RLS’, says doctors have diagnosed him with a rare condition which means each time he ejaculates, scar tissue will form in his penis.

Eventually, the build up of scar tissue will mean he will no longer be able to achieve an erection, he says.

He claims he has seen a range of doctors who are unable to explain the cause of his condition.

They have called it ‘idiopathic fibrosis of the corpora cavernosa’ – which essentially means unexplained fibrous tissue - hard, scar tissue - forming in the penis.

Fibrosis of the penis is a symptom of a rare condition called Peyronie’s disease, which usually affects men over 40 years old – although it can happen to men of any age. A thickened area or one or more hard lumps form in the shaft of the penis.

As a result, it can become curved, and men can experience pain during an erection, or are sometimes unable to get one. 

Doctors do not exactly what causes Peyronie’s disease, but it has been linked to an injury or repeated blows to the penis, and is associated with low testosterone levels.

But RLS says these explanations don’t apply to him.

He says he doesn’t wear briefs or use saunas, and has experienced no blunt force to his genitals - and so his case has baffled doctors. 

In his post, RLS says he has now accepted he will eventually lose his ability to get an erection, after trying every therapy possible.

He said: ‘I’m 34 years old and I have a finite amount of real, working, orgasm-capable erections remaining. They estimate I have about a hundred nuts left.’

Despite trying every conceivable therapy and medication available, nothing works, he says.

Therefore, he says he has been through the ‘five stages of grief’ and accepted he will be impotent in future.

He has to refrain from masturbation, and feels he needs to be selective with women.

He said: ‘Lately, I’m terrified of sex itself. I slept with one woman since the diagnosis, but when she wanted to go for a second round, a wave of incredible panic swept over me. I burst into a cold sweat and my chest felt like it was gonna cave in on itself. Since then I’ve been chaste as a nun, but I toss and turn all night with crazy, disturbing sex dreams, and now I’m worried that I’ll lose a nut to a wet dream.’

However, doctors have told MailOnline that while fibrosis – the build up of scar tissue – in the penis which leads to impotence is possible, it would be impossible to predict the exact number of orgasms a man would have before his penis ‘stopped working’.

Dr Ian Eardley, a consultant urologist at Leeds Teaching Hospital Trust and a spokesperson for The Urology Foundation, told MailOnline: ‘Ejaculation and erection are two separate mechanisms. If you get fibrosis you may lose an erection. There are men with fibrosis who can climax and ejaculate but they can’t get an erection.’