Generally abnormal penile erections are classified as primary (atopic) and secondary. According to hemodynamics, they are classified as low-flow type (ischemic) and high-flow type (non-ischemic). Abnormal penile erections are also classified as acute, intermittent (recurrent or intermittent, as in sickle cell anemia), and chronic (usually the high blood flow type). Generally, in the early stage of abnormal penile erection, all of them are physiological penile erection, and later develop into high blood flow type. So, how can abnormal penile erection be determined? Manifestations of abnormal penile erection Men’s penis will be erect when they receive sexual stimulation, but sometimes the penis will be inexplicably erect and is continuously erect, then you have to check whether it is abnormal penile erection. Generally speaking, an abnormal erection of the penis can be diagnosed if the penis has a persistent painful erection for more than 6 hours without sexual urge, or if the penis remains longitudinally erect after sexual intercourse and lasts for a long time, and the penile corpus cavernosum is obviously swollen and painful, making it intolerable. If the erection lasts for more than 2 days, there is thrombosis in the cavernous body, the erection of the penis remains unrelieved, and the neuroreflex (functional) erection is replaced by a thrombotic, sclerotic erection. If the erection lasts for more than 10 days, the penile corpus cavernosum becomes fibrous and sclerotic, causing serious organic damage and leaving permanent impotence sequelae. Therefore, abnormal penile erection should be regarded as an emergency and must be treated as soon as possible and early. After an abnormal erection of the penis occurs, cold ice packs can be applied to the penis or isoamyl nitrate can be inhaled to dilate the small arteries and sent to the hospital in time for treatment. Generally, according to the duration of abnormal erection, non-surgical conservative treatment is first performed for 12 hours, and if the swelling does not go down, shunt surgery should be done. There are more methods of non-surgical treatment, including pain relief, sedation, cold compresses, and large amounts of fluids. Epidural anesthesia with cavernous aspiration and controlled low-pressure anesthesia with nitroprusside, local injection of meprobamate, and prostate massage are available. For abnormal penile erection induced by cavernous injection of poppies, fast bicycle exercise therapy can be used, i.e., the patient can perform fast and strong bicycle exercise, and the engorged penis will disappear within a few minutes, which is actually a simple and non-invasive lower limb “shunt”. There are also reports of intracavernosal injections of 3-5 mg of Alamine, with manual kneading to help blood return. There are applications of urokinase 10,000 units, dissolved in saline 5-10 ml, for intracavernosal injection, 5-30 minutes after the persistent erection can be completely subdued. The best way is of course to go to the hospital for medical attention.