Besides causing intense pain, when a person gets bitten by a brazillian wandering spider the venom of the spider can also cause “priapism” in humans. Priapism is condition that causes a man to hav e long lasting erections,even after achieving orgasm, that can sometimes be very painful. Erections resulting from the brazilian wandering spider bite are uncomfortable. They can last for many hours and can lead to impotence. A component of the venom (Tx2-6) is being studied for use in erectile dysfunction treatments.