Infringements erection to some extent there was everyone the man, even some times in the life. This frustration can arise at absolutely healthy men after acceptance of significant dozes of alcohol, reception of some medical preparations, narcotic substances, and, at last, simply weariness or a nervous pressure.
Why the mechanism erection so is sensitive to external influence?
The matter is that erection represents hydraulic system, that is arises when the volume flow in a penis of arterial blood to become more, than volume flowing venous. It is realized due to a special structure of vessels of a penis.
First, on each vein in a penis it is necessary on two arteries (analogues of such vascular structure meet at the person only in a brain).
Secondly, unlike other parts of a body of the person the wall of veins of a penis has a muscular layer that allows, reducing diameter of veins to reduce outflow of blood from a penis.
Despite of a seeming simplicity this mechanism has multistage system of regulation.
She begins with a brain where start erection (at occurrence adequate irritator) is formed.
It is natural, that at psychological problems and the infringements of a brain caused by the organic reasons (tumours, traumas, haemorrhages), and also toxic action of various substances on a brain this reaction is deformed.
Normal vascular reaction is supervised by departments of a spinal cord, and the centers which are responsible erection and ejaculation, are separated. These centers provide synchronism of vascular reaction (a spasm of veins and expansion of arteries).
Therefore at various defeats of a spinal cord there are frustration erection. In clinics spend diagnostics of similar infringements the psychologist, the neuropathologist and the doctor - andrologist with an opportunity of application of the advanced methods of research spend.
At last, the major value has a level of blood supply of a penis (absence of atherosclerotic changes of bringing vessels, blood clots, etc.). Also parameters of arterial pressure (at a hypotonia, and also reception hypotensive preparations, the level erection considerably decreases) have important value.
The condition cavernous bodies of a penis provides an opportunity of filling with blood of a penis.
Infringements are possible at illness Peyronie (when there is a curvature of a penis) or when the fabric cavernous bodies is condensed, loses elasticity and cannot contain necessary volume of blood.
The hormonal system of the man under influence of stresses and age changes also renders huge negative influence both on desire of the man, and on a level erection. Skilled doctors endocrinology together with andrologists can lead inspection of the hormonal status and will reveal possible infringements.

