Venous leakage, also known as veno-occlusive dysfunction, is a medical condition that affects blood flow regulation within the penis. Normally, during sexual arousal, blood fills the penile tissues and is trapped there to maintain an erection. In venous leakage, the veins fail to close properly, causing blood to escape prematurely—leading to weak, short-lived, or unsustainable erections. This condition is one of the underlying causes of erectile dysfunction (ED) in men, particularly when standard treatments such as oral medications (like Viagra or Cialis) do not produce satisfactory results. Source: https://www.dotclinics.pk/venous-leakage