Patient's question:
I just get erect when I think of something sexual?~~Is this a disease???... First question supplement: But I often don't know the difference between good and bad...?I don't know what to do.Doctor's answer:
When boys enter puberty, with the increase in the secretion of male hormones, "sex" begins to awaken. They can become excited by auditory, visual, olfactory, tactile, as well as mental and imaginative stimuli related to sexual content, stimulating the cerebral cortex. This, in turn, transmits signals through the thoracolumbar segment of the spinal cord to the erection center, which acts on the corpora cavernosa of the penis, causing the arteries to dilate and a large amount of blood to flow into the corpora cavernosa. The veins constrict, reducing the outflow of blood from the cavernosa. As a result, blood is fully retained in the rich vascular and sinusoidal networks of the corpora cavernosa, causing the penis to become erect. This type of erection, triggered by visual, auditory, or imaginative stimuli that excite the cerebral cortex and then act on the penis, is called psychogenic erection. Additionally, local stimuli, such as touching the external genitalia, friction with underwear while walking, or irritation of the rectum or bladder (e.g., due to inflammation), can also cause penile vasocongestion by transmitting signals through the sacral nerves to the penile blood vessels. This type of erection, caused by direct local stimulation, is called reflexive erection.