This disease may cause a spontaneous erection that lasts for hours. Dengue fever is the most common disease in the world that is transmitted by mosquito bites.
Every year around 100 million people around the world become infected with the virus. Doctors in West Africa report that the mosquito-borne virus can also cause spontaneous erections that can last for hours, based on the story of a 17-year-old patient from Burkina Faso who demonstrated the embarrassing side effect to doctors. The experts attributed the symptom - known as arterial priapism - to the virus, which infected blood vessels in the penis.