1. Organic disease
(1) Vascularity includes any disease that may lead to the decrease of blood flow in the cavernous artery of the penis, such as atherosclerosis, arterial injury, arterial stenosis, penile artery shunt and cardiac dysfunction, or the penile white membrane obstructs the venous return and closure mechanism, and the number of smooth muscles in the cavernous sinus of the penis is reduced.
(2) Neurogenic central and peripheral nervous system diseases or injuries can cause impotence
(3) Surgical and traumatic macrovascular surgery, radical resection of prostate cancer, radical resection of abdomen, perineum, rectal cancer, pelvic fracture, lumbar compression fracture or riding injury can cause vascular and nerve injury related to penis erection, leading to impotence.
(4) Endocrine diseases impotence is caused by endocrine diseases, mainly in diabetes, hypothalamus pituitary abnormalities and primary gonadal dysfunction. According to foreign reports, 23%~60% of male patients with diabetes have secondary impotence of varying degrees. Its pathogenesis is mainly related to autonomic neuropathy, penile vascular stenosis, endocrine abnormalities and mental factors of penile cavernous body.
Diseases of the penis itself
Such as penis induration, penis bending deformity, severe phimosis and prepuce balanitis.
Congenital curvature of penis, double penis, small penis, displacement of penis and scrotum, retroversion of bladder, urethra, congenital testicular defect or dysplasia, fibrous scar formation of penis cavernous body, varicocele, etc.
Secondary chronic inflammation of genitourinary tract, cystitis, prostatitis, such as orchitis, epididymitis, urethritis, cystitis, prostatitis, among which chronic prostatitis and impotence are the most common. Prostatic hyperplasia, prostatectomy, urethral rupture, penis, testicular injury and other urogenital system surgery and partial injury can cause impotence. Patients with chronic renal failure often suffer from impotence due to testicular atrophy and decreased testosterone.
5. Other factors
Radiation, heavy metal poisoning, etc. Chronic diseases and long-term use of certain drugs can also lead to impotence.
6. Psychological reasons
It refers to impotence caused by mental and psychological factors such as tension, stress, depression, anxiety, marital discord.
7. Mixed etiology
It refers to impotence caused by psychosocial factors and organic causes. In addition, due to the lack of timely treatment of organic impotence, the psychological pressure of patients increased and the fear of sexual failure made the treatment of impotence more complex.