In addition to the natural decline of sexual function in the elderly, the influence of drugs, and impotence caused by surgery, almost every system disease may cause impotence.
(1) Nervous system disease: This kind of disease includes spinal cord injury, tumor, and so on. There is failure in conductive excitation. Such as amyotrophic lateral sclerosis, myasthenia gravis, Parkinson's disease, spinal cord tumors, multiple myelosclerosis, electroshock therapy, tuberculosis, temporal lobe disease, spina bifida and other brain and spinal cord diseases, and peripheral neuritis can all lead to impotence in varying degrees.
(2) Cardiovascular disease: This kind of disease includes atherosclerosis, aneurysm, arteritis, etc. The blood supply of the penis is affected due to the failure of blood transportation,
(3) Endocrine disorders: there are many diseases of this kind, such as diabetes, pituitary tumor, cortisol increase, hyperthyroidism or hypothyroidism, adrenal cortex insufficiency, feminized stromal cell testicular tumor, etc. These diseases interfere with the physiological balance of the hypothalamic gonadal axis.
(4) Urinary system diseases: diseases of male genitourinary organs are closely related to impotence. Urogenital inflammation (prostatitis, urethritis), congenital malformations (hypospadias, hypospadias), penile sclerosis, cryptorchidism, testicular hypoplasia, urethral injury, cystectomy, prostatectomy, etc.