1. Fleeen disease
That is, the inhibitory effect of cerebral cortex on sexual excitement is strengthened and the spinal erection center excitement is reduced.That is, the so -called functional reasons. Without the existence of organic changes, the indulgence can be excessive, causing the nervous system to often be excessively excited, and eventually fails due to excessive excitement.It can also be chronic disease, physical weakness or excessive fatigue, and is caused by physical or neurasthenia caused by physical or mental labor.
Another reason is from mental factors, such as fear of pregnancy, poor sexual intercourse environment, indifferent emotions, or thinking that there are problems with sexual function in the past and masturbation.Caused by blame psychology.
2. Conditional reasons
Due to the elderly, organ system diseases, drugs, or surgery, such patients cannot erected the penis even under strong stimuli, accounting for about 60 %.The reasons for the quality impotence to be summarized are:
(1) Insufficient blood transport: atherosclerosis or other vascular disease can lead to insufficient blood transport.Atherosclerosis, if the arteries that occur in the penis or the blood vessels dominated by nutrients, can also cause impotence in patients.
(2) Neurological disorders: For example, spinal cord injury, spinal horizontal section, spinal cord tumor, and temporal lobe disease can cause impotence due to conductive exciting neurological disorders.
(3) Endocrine disorders: mainly diabetes, hypothalamus -pituitary abnormalities and primary gonad functional incomplete:
① The pituitary gland abnormalities of the hypothalamus account for about 7 to 19 % of patients with impotence patients. They are mainly pituitary tumors. Others are infiltrated with peripheral lesions or pituitary dysfunction.The factors that promote impotence are the reduction of hormones (GNRH) of crude gonad hormone (Gnrh) reduced lutein -generated hormones or follicular survival hormones (LH and FSH) reduction and increasing prolactin;
② Diabetes account for about 50 %.Patients with impotence are 2 to 5 times more normal than those of the same age. If there are peripherals and plant nerve diseases and abnormal blood vessels, the degree of impotence is generally inconsistent with the degree of diabetic vascular retinopathy.The factors that occur in impotence are mainly due to the governance of the perineal sympathetic neuropathy caused by diabetes; the blood flow of the penis caused by the arterial stenosis caused by diabetes, and the mental factor of metabolic disorders caused by diabetes;
③ Hypertrophy of thyroid function, about 56 % of the hyperthyroidism of thyroid function can have impotence, but the mechanism is unclear;
④ Decreased thyroid dysfunction, this disease causes reduction of thyroid hormone secretion, testosterone and testosterone binding globulin decrease, and prolactin increases.The cause of impotence is that the systemic protein synthesis disorders lead to degenerative lesions of testicular cell tube, and the reduction of interstitial cells;
