What are the possible reasons for unexplained penis enlargement?

It depends on the cause of the curved penis. If it has been present since young, it could likely be due to frenulum brevie or a short frenulum, which is the point where the foreskin is attached to the penis. The other possibility would be congenital penile curvature. These two conditions would require surgical correction. Curvatures that develop overtime would be due to Peyronie’s disease. This is commonly associated with a palpable lump on the penis, painful erections, and in some patients, penile shortening.

There are no known penis enlargement cream or pills that are scientifically proven to be effective. There are penile traction devices that have shown some potential in this area.