La impotencia generandi (también citada simplemente como esterilidad), en cambio, se caracteriza por dejar a quien la padece sin la posibilidad de tener hijos aún cuando la penetración se concreta sin mayores inconvenientes. Esto puede deberse a un mal funcionamiento de los órganos sexuales o a la producción defectuosa de gametos (óvulos o espermatozoides, según el género).
Penile erection is managed by two mechanisms: the reflex erection, which is achieved by directly touching the penile shaft, and the psychogenic erection, which is achieved by erotic or emotional stimuli. The former uses the peripheral nerves and the lower parts of the spinal cord, whereas the latter uses the limbic system of the brain. In both cases, an intact neural system is required for a successful and complete erection. Stimulation of the penile shaft by the nervous system leads to the secretion of nitric oxide (NO), which causes the relaxation of smooth muscles of corpora cavernosa (the main erectile tissue of penis), and subsequently penile erection. Additionally, adequate levels of testosterone (produced by the testes) and an intact pituitary gland are required for the development of a healthy erectile system. As can be understood from the mechanisms of a normal erection, impotence may develop due to hormonal deficiency, disorders of the neural system, lack of adequate penile blood supply or psychological problems.[17] Spinal cord injury causes sexual dysfunction including ED. Restriction of blood flow can arise from impaired endothelial function due to the usual causes associated with coronary artery disease, but can also be caused by prolonged exposure to bright light.
Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Las causas más frecuentes de impotencia vascular son: diabetes, hipertensión, aumento del colesterol, tabaquismo, y enfermedades cardiovasculares. En estos varones con factores de riesgo cardiovascular, la disfunción eréctil puede ser el primer síntoma “centinela” de enfermedad cardiovascular que progresará con el tiempo. En estos hombres es necesario tratar los problemas de erección y es muy importante corregir estos factores de riesgo vascular que pueden desencadenar un evento cardíaco o vascular más grave.

Modern drug therapy for ED made a significant advance in 1983, when British physiologist Giles Brindley dropped his trousers and demonstrated to a shocked Urodynamics Society audience his papaverine-induced erection.[32] The drug Brindley injected into his penis was a non-specific vasodilator, an alpha-blocking agent, and the mechanism of action was clearly corporal smooth muscle relaxation. The effect that Brindley discovered established the fundamentals for the later development of specific, safe, and orally effective drug therapies.[33][better source needed][34][better source needed]

La salud sexual es actualmente un importante factor en la calidad de vida de las personas. La impotencia sexual, a pesar de no ser un problema de salud que acarree riesgos de vida, puede traer consecuencias indeseables en la vida personal del paciente, influyendo en sus relaciones y en su autoestima, pudiendo, incluso, llevar al paciente a la depresión.

Equipos de urólogos, endocrinólogos, cardiólogos y diabetólogos entrenados buscan tratar la problemática.  Lo ideal sería acompañar cualquier tipo de intervención médica con una terapia sexológica definida como 'una terapia breve que trabaja sobre el síntoma sexual y trata de romper los círculos viciosos que lo único que hacen es afianzar o reforzar el síntoma'.


Penile erection is managed by two mechanisms: the reflex erection, which is achieved by directly touching the penile shaft, and the psychogenic erection, which is achieved by erotic or emotional stimuli. The former uses the peripheral nerves and the lower parts of the spinal cord, whereas the latter uses the limbic system of the brain. In both cases, an intact neural system is required for a successful and complete erection. Stimulation of the penile shaft by the nervous system leads to the secretion of nitric oxide (NO), which causes the relaxation of smooth muscles of corpora cavernosa (the main erectile tissue of penis), and subsequently penile erection. Additionally, adequate levels of testosterone (produced by the testes) and an intact pituitary gland are required for the development of a healthy erectile system. As can be understood from the mechanisms of a normal erection, impotence may develop due to hormonal deficiency, disorders of the neural system, lack of adequate penile blood supply or psychological problems.[17] Spinal cord injury causes sexual dysfunction including ED. Restriction of blood flow can arise from impaired endothelial function due to the usual causes associated with coronary artery disease, but can also be caused by prolonged exposure to bright light.
La Disfunción Eréctil es la incapacidad de obtener y mantener una erección para conseguir una relación sexual satisfactoria. Esta sintomatología debe persistir durante seis meses para ser considerada una patología. Además, debe haber un fallo cada cuatro relaciones sexuales para que el hombre empiece a sospechar que tiene un problema más allá de un simple gatillazo. En concreto, los signos que hacen sospechar la existencia de Disfunción Eréctil son, además de los citados: erecciones espontáneas por la mañana menos frecuentes y con menor rigidez; si se llega al clímax más rápido, en menos tiempo o con una erección incompleta; en caso de pérdida de erección al cambiar de postura; o cuando no se consigue una erección en absoluto.
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