Peyronie’s disease is a condition in which the scar NIH external connexion tissue, called plaque, develops under the skin of the penis — a male organ used for urination and sex.
The plaque is formed within the penis, in a thick elastic membrane called tunica albuginea. The tunica albuginea helps to keep the penis rigid during erection. The plate can grow anywhere along the penis.
As it grows, the plaque draws onto the surrounding tissues and causes the penis to curve or bend, normally during erection. Curves in the penis may make periods painful and can make sexual relations painful, difficult, or impossible.