Erectile dysfunction can be diagnosed in several different ways. One of them is Duplex Ultrasound test. It allows one to measure the blood pressure in the penis and vascular dilatation in it. After that the doctor may offer checking the Penile Nerves Function. This test is done in the following way: the doctor puts on a glove and puts his finger inside the patient’s anus. This allows the doctor to see how the anal sphincter works. At the same time the doctor squeezes the penis head, and it makes the anus contract. The goal of this test is to see the function of the penile nerves. One more test is penile biothesiometry. This test is done by means of electromagnetic vibrations, which show if the nerves in the pelvic area are damaged or not. If they are damaged, the doctor can speak about erectile dysfunction, which means inability to get an erection.