I have curvature to the left side and don't feel any bump or Peyronies plaque. I know this means the Peyronies scar can be too small or too large and flat and I've also read that it won't be on the surface of the skin. However, I do see a few little things that appear to be surface scars where my curve starts. Why wouldn't a scar on the surface of the skin have the same effect as if it were underneath? Don't all scars share the same characteristic of not being flexible?
No, a Peyronie's scar on the surface would not have the same affect as if it were underneath.
Yes, all scar formation within the body shares the fact that a greater amount of collagen and fibrin fibers is present that is not as elastic and pliable as normal skin.
Even so, the location of the scar or plaque material does make a difference. It is the hydraulic tension or over-filling with blood within the two corpora cavernosae of the shaft that creates the hardness and expansion of an erection. Each corpora cavernosum is covered by the tunica albuginea (which is normally also elastic) but will not expand as it should when the Peyronie's plaque is present within the tunica. The external skin layer does not participate in that response of creating the erection, even though it does to a degree also expand; even when erect the external layer of skin of the shaft is not especially tight or overly stretched. Only if these were extremely large in comparison to the overall size of the shaft would an external scar cause a distortion of an erection.
I cannot comment on what you refer to as the few little things that appear to be scars on the surface of the shaft. A scar on the surface of the shaft skin not have the same effect as if it were underneath because no blood is trapped in the skin; there is no anatomical mechanism for it to happen. It is the trapping of blood that creates the hydraulic effect, and this takes place only in the corpora cavernosae and nowhere else.
It might be helpful to you to review some basic penile anatomy on the PDI website at "Peyronie's anatomy of the penis and related areas" and "Tunica albuginea and Peyronie's disease."
If you are unable to find the Peyronie's plaque that is causing your distortion, I suggest that you arrange for a telephone discussion and I will work with you to help you locate it. It is essential to good treatment results that you know about the size, location, density and surface features of the scar that is causing your bent penis. TRH