It's common for the penis to curve slightly to the left or right when it's erect. Peyronie's disease causes the penis to become curved when it's erect. a curve in the penis when it's erect (usually it curves upwards).
Learn when a curved penis is a problem and when it might actually be an advantage in certain sexual positions. All your penis curve questions answered.
Many men have a slight curve in the penis. As long as there is no pain or problem with sexual performance, men with a slightly curved penis.