Causes

Hypospadias is present at birth (congenital). As the penis develops in a male fetus, certain hormones stimulate the formation of the urethra and foreskin. Hypospadias results when a malfunction occurs in the action of these hormones, causing the urethra to develop abnormally.

In most cases, the exact cause of hypospadias is unknown. Sometimes, hypospadias is genetic, but environment also may play a role.