A penile curve that has appeared or worsened over six months may be a sign of Peyronie's disease (a condition that causes the penis to curve due to internal scar tissue). It is important to see a doctor or urologist for assessment. Treatment options may include medications, specialised injections to break down plaque, or surgery if the curvature makes sexual intercourse difficult or painful.

A slight curve of the penis to the left is usually normal and does not require treatment unless it causes pain or difficulty during sexual intercourse. You should consult a doctor if the curve is new or worsening, as only severe cases may require medical treatment, such as medication or surgery.