I think anonnn1 is correct in that blood flow down there may be a common denominator in some of the sexul issues.
Also: as it was stated, peyronies is classically thought of as a bend or curving of the penis, but what I ,and others here, seem to be getting is sometimes refered to as sepital peyronies where there is a cordlike structure going throughout the length of the penis. I am guessing that as more and more of the structure is compriesed of scar tissue, that leaves less normal erectile tissue and possibly damages nerves.
I think the circulation, fibromyalgia thearoy is plausible.
I think just the general hormone imbalance could also have created the breeding ground for this.
Anohter very likly theory is that allthough peyronies does not always casue ED. ED casues peyronies (heres how) :FIN casued some ED (erection was not as ridge as pre-FIN) Using a "less than ārock hardā penis for penetration is thought to be a common way to bend, break or snap tissue and then the scar buildup cycle begins. No one knows why some people get penis injuries and it heals while others have the scar tissue thing run amuck.
I am planning on becomming active on the peyronies boards and will post what I learn.