I read on one post that Propecia caused someone to have pudendal neuropathy which caused both sensory and motor dysfunction in the genital tissues. Is this a Post-Finasteride-Syndrome? Is pudendal neuropathy a side effect?
The term “neuropathy” means damage to a nerve… so “pudendal neuropathy” is damage to the pudendal nerve. I cannot imagine how Propecia can cause damage to this specific nerve. Damage to the nerve is usually from mechanical injury (bike riding, falling on your buttocks, etc) or inflammatory issues (infection) or chronic medical conditions that damage your nerve, such as diabetes or multiple sclerosis. Propecia is a drug that that partially blocks the conversion of testosterone to DHT. If someone is going to claim that there is some special DHT relationship to a pudendal nerve, we might as well be blaming Propecia for our economy or the color of the sky.
Stating that a drug (Propecia) caused a neuropathy to the pudendal nerve is questionable, because there is no difference in the pudendal nerve to a nerve that innervates your thumb. The pudendal nerve is one of many nerves in your pelvic area (for both men and women) and one segment of it innervates your penis or clitoris. I believe many readers may have heard of sciatica when doctors refer to certain back pain caused by the sciatic nerve. The pudendal nerve is a distal branch of a sciatic nerve. Patients with back problems or pelvic area problems/trauma/tumor/etc can have pudendal nerve issues. Pudendal nerve damage can cause erection problems, but it will also cause perineal numbness or pain (see here).
If there is an erection issue, the most simple test is a nocturnal penile tumescence (NPT) test. Imagine a roll of stamps wrapped around a flaccid penis and taped. If you get an erection, the stamps will stretch and break at the perforations. I assume there are better devices out there and better tests, but this test can sometimes be a good starting point to help delineate if erectile issues are psychological or physical. Normally, men will have involuntary erections during sleep (aka “morning wood”). It would be interesting to see if the 70 or so men that reported permanent erection problems can achieve nocturnal (involuntary) erections and if they ever underwent these tests, But from my reading I believe the erection issues were self-reported and no subjective testing was performed.
In matters of medical health, the Internet is not a place to self diagnose medical conditions or become armchair physicians. But alas, it is what many readers will continue to do and the urban legends will propagate.
Sometimes its hard to decipher research and its conclusions especially when there is controversy. The news you are referring to is from a 
I am a physician, scientist, patient, and someone who has brought several therapies for life-threatening diseases to market via my work in the biotechnology industry. I enjoy your blog. In response to posts oddly critical of your views of “
I wanted to call your attention to yesterday’s announcement relating to follicular unit extraction (FUE). As the ‘inventors’ of the procedure, publishing the 
Bill joined Bosley where he soon became its president. Unhappy with the state of hair transplantation at that time, he left Bosley and in 1991 began visiting prominent surgeons, such as Walter Unger and Emmanual Merritt. During this time, he developed his ideas about procedures with large numbers of small grafts, the “megasession.” Bill began doing hair transplants, which in the beginning meant only 400-500 grafts where he did all the cutting and placing himself.
You need to go see your doctor for a physical examination and possible testing. While Propecia can cause a decreased sex drive (in 1 to 2% of men), it is temporary since the drug only lasts in your blood stream for about one day. After one year, I hardy doubt your sexual problem is due to Propecia. You need to see a doctor for further evaluation. In fact, erectile dysfunction may be one of the first signs of an underlying medical problem.
Anyone can write and publish anything on the Internet. You can you find contrary evidence to those sites you listed at 
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Yesterday, I received some sad news when I learned about the passing of one of our hair transplant patients just 5 months after his procedure. He had complained to his local doctor about chest pain and was told that it just was indigestion. This patient complained a number of times about the chest pain to his physician and each time he was tagged with the diagnosis of reflux. He recently had a heart attack and died.
I received this email from a patient of mine and I have reposted it below with his permission (removing any identifying information, of course). This was not solicited, and it serves as an example of those men out there that are looking into hair systems (otherwise known as wigs or toupees). The price chart at the end of this post could be a wake-up call to many that think hair systems are cheaper than 
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