Erectile dysfunction (ED) is the persistent inability of a man to achieve or maintain an erection sufficient for satisfactory sexual intercourse and sexual activity. Erectile dysfunction is generally considered a persistent or recurrent problem rather than an occasional difficulty with erection. The term \u201cimpotence\u201d is now used less frequently because \u201cerectile dysfunction\u201d is a more accurate and neutral medical term.<\/p>\n\n\n\n
Depending on its causes and mechanisms of development, ED can be divided into several types:<\/p>\n\n\n\n
Psychogenic erectile dysfunction may be associated with fatigue, depression, anxiety, various phobias, psychological trauma, relationship difficulties, and other psycho-emotional factors. These factors may interfere with the mechanisms responsible for normal erection through:<\/p>\n\n\n\n
Direct inhibitory effects on sexual arousal;<\/p>\n\n\n\n
Inhibition mediated through spinal centers involved in the erectile response;<\/p>\n\n\n\n
Increased levels of adrenaline and noradrenaline.<\/p>\n\n\n\n
Arteriogenic erectile dysfunction develops when arterial blood flow to the penis is impaired. Possible causes include:<\/p>\n\n\n\n
Atherosclerosis;<\/p>\n\n\n\n
Penile trauma;<\/p>\n\n\n\n
Congenital vascular abnormalities;<\/p>\n\n\n\n
Smoking;<\/p>\n\n\n\n
Diabetes mellitus;<\/p>\n\n\n\n
Hypertension.<\/p>\n\n\n\n
In addition to impaired erection, insufficient blood supply may gradually cause structural changes in the erectile tissue. Without appropriate treatment, these changes may become more pronounced over time.<\/p>\n\n\n\n
Venogenic erectile dysfunction develops due to impairment of the veno-occlusive mechanism responsible for maintaining blood within the corpora cavernosa during an erection.<\/p>\n\n\n\n
Possible mechanisms include:<\/p>\n\n\n\n
Abnormal venous drainage through enlarged superficial, dorsal, cavernosal, or crural veins;<\/p>\n\n\n\n
Cavernosal-spongiosal shunting, in which blood flows abnormally from the corpora cavernosa into the corpus spongiosum;<\/p>\n\n\n\n
Abnormalities of the tunica albuginea caused by traumatic rupture, Peyronie\u2019s disease, or primary or secondary thinning;<\/p>\n\n\n\n
Functional impairment of cavernosal erectile tissue associated with abnormalities in neurotransmission, psychogenic inhibition, smoking, or structural changes.<\/p>\n\n\n\n
Cavernosal insufficiency may have various causes. These can result in intracellular and extracellular changes in the corpora cavernosa, their blood vessels, and nerve endings, interfering with the normal erectile mechanism.<\/p>\n\n\n\n
Neurogenic erectile dysfunction may result from injuries or diseases affecting the brain or spinal cord, as well as damage to peripheral nerves in the pelvic region. Such nerve damage may occur, for example, following certain surgical procedures involving the prostate.<\/p>\n\n\n\n
This form is associated with anatomical abnormalities of the penis. Possible causes include:<\/p>\n\n\n\n
Severe penile curvature;<\/p>\n\n\n\n
Peyronie\u2019s disease;<\/p>\n\n\n\n
Fibrosis of the corpora cavernosa;<\/p>\n\n\n\n
Congenital penile curvature.<\/p>\n\n\n\n
Cavernosal fibrosis may be associated with trauma, previous surgical procedures, or other damage to penile tissues.<\/p>\n\n\n\n
Treatment of erectile dysfunction caused by significant anatomical abnormalities may require surgery. In selected cases, penile prosthesis implantation may be considered.<\/p>\n\n\n\n
Hormonal abnormalities, particularly testosterone deficiency, may contribute to erectile dysfunction. Testosterone influences sexual desire and several physiological mechanisms involved in erectile function.<\/p>\n\n\n\n
Low testosterone levels may also be associated with changes in body composition and the structure and function of cavernosal smooth muscle.<\/p>\n\n\n\n
Libido (sexual desire) is also influenced by testosterone levels.<\/p>\n\n\n\n
Age itself can influence the quality and duration of erections. With increasing age, changes may occur in blood flow, testosterone levels, nervous system sensitivity, and vascular elasticity.<\/p>\n\n\n\n
However, normal age-related changes should be distinguished from erectile dysfunction caused by cardiovascular, endocrine, neurological, or other medical conditions, which become more common with age.<\/p>\n\n\n\n
Some specialists also distinguish medication-induced erectile dysfunction as a separate type.<\/p>\n\n\n\n
Diagnosis of Erectile Dysfunction<\/p>\n\n\n\n
Diagnosis is based on the patient\u2019s medical and sexual history, physical examination, laboratory testing, and, when indicated, instrumental examinations.<\/p>\n\n\n\n
Standardized questionnaires can help assess erectile function and the severity of symptoms. They may also make it easier for patients to discuss sensitive aspects of their sexual health.<\/p>\n\n\n\n
International Index of Erectile Function<\/p>\n\n\n\n
A commonly used screening tool is the five-item International Index of Erectile Function questionnaire (IIEF-5).<\/p>\n\n\n\n
How do you rate your confidence that you could get and keep an erection?<\/p>\n\n\n\n
Very low \u2014 1
Low \u2014 2
Moderate \u2014 3
High \u2014 4
Very high \u2014 5<\/p>\n\n\n\n
When you had erections with sexual stimulation, how often were your erections hard enough for penetration?<\/p>\n\n\n\n
No sexual activity \u2014 0
Almost never or never \u2014 1
A few times (much less than half the time) \u2014 2
Sometimes (about half the time) \u2014 3
Most times (much more than half the time) \u2014 4
Almost always or always \u2014 5<\/p>\n\n\n\n
During sexual intercourse, how often were you able to maintain your erection after penetration?<\/p>\n\n\n\n
Did not attempt intercourse \u2014 0
Almost never or never \u2014 1
A few times (much less than half the time) \u2014 2
Sometimes (about half the time) \u2014 3
Most times (much more than half the time) \u2014 4
Almost always or always \u2014 5<\/p>\n\n\n\n
During sexual intercourse, how difficult was it to maintain your erection until completion of intercourse?<\/p>\n\n\n\n
Did not attempt intercourse \u2014 0
Extremely difficult \u2014 1
Very difficult \u2014 2
Difficult \u2014 3
Slightly difficult \u2014 4
Not difficult \u2014 5<\/p>\n\n\n\n
When you attempted sexual intercourse, how often was it satisfactory for you?<\/p>\n\n\n\n
Did not attempt intercourse \u2014 0
Almost never or never \u2014 1
A few times (much less than half the time) \u2014 2
Sometimes (about half the time) \u2014 3
Most times (much more than half the time) \u2014 4
Almost always or always \u2014 5<\/p>\n\n\n\n
Interpretation of the Results:<\/p>\n\n\n\n
5\u20137 points \u2014 severe erectile dysfunction;<\/p>\n\n\n\n
8\u201311 points \u2014 moderate erectile dysfunction;<\/p>\n\n\n\n
12\u201316 points \u2014 mild-to-moderate erectile dysfunction;<\/p>\n\n\n\n
17\u201321 points \u2014 mild erectile dysfunction;<\/p>\n\n\n\n
22\u201325 points \u2014 no erectile dysfunction according to this screening scale.<\/p>\n\n\n\n
Laboratory Diagnosis<\/p>\n\n\n\n
Laboratory evaluation may include assessment of hormonal status. Depending on the patient\u2019s medical history and clinical indications, additional tests may be performed to identify or exclude underlying conditions.<\/p>\n\n\n\n
These may include:<\/p>\n\n\n\n
Blood glucose;<\/p>\n\n\n\n
Prostate-specific antigen (PSA), when indicated;<\/p>\n\n\n\n
Lipid profile;<\/p>\n\n\n\n
Total cholesterol;<\/p>\n\n\n\n
High-density lipoprotein (HDL);<\/p>\n\n\n\n
Low-density lipoprotein (LDL);<\/p>\n\n\n\n
Complete blood count;<\/p>\n\n\n\n
Urinalysis.<\/p>\n\n\n\n
Nocturnal Penile Tumescence Monitoring<\/p>\n\n\n\n
In some cases, monitoring of spontaneous nocturnal erections may be used to help differentiate between predominantly organic and psychogenic erectile dysfunction. In psychogenic ED, spontaneous nocturnal erections are often preserved.<\/p>\n\n\n\n
Doppler Ultrasound of the Penile Arteries<\/p>\n\n\n\n
Doppler ultrasound can be used to assess penile blood flow and identify vascular or structural abnormalities associated with conditions such as cavernosal fibrosis and Peyronie\u2019s disease.<\/p>\n\n\n\n
The examination may be more informative when blood flow is evaluated both at rest and after pharmacologically induced erection.<\/p>\n\n\n\n
Intracavernosal Injection Test<\/p>\n\n\n\n
An intracavernosal injection of a vasoactive medication, usually alprostadil, may be used as part of the evaluation of suspected vascular erectile dysfunction.<\/p>\n\n\n\n
The quality and duration of the resulting erection provide information about arterial inflow and veno-occlusive function.<\/p>\n\n\n\n
When clinically indicated, other examinations may include:<\/p>\n\n\n\n
Cavernosometry \u2014 assessment of the flow rate of saline required to produce and maintain an erection, which can provide information about the veno-occlusive function of the corpora cavernosa;<\/p>\n\n\n\n
Cavernosography \u2014 imaging used to identify abnormal venous drainage from the corpora cavernosa;<\/p>\n\n\n\n
Radionuclide penile scintigraphy \u2014 an examination that can assess regional blood flow within the erectile tissues;<\/p>\n\n\n\n
Neurophysiological examinations, including assessment of the bulbocavernosus reflex in patients with conditions such as diabetes mellitus or spinal cord injury.<\/p>\n\n\n\n
Treatment of Erectile Dysfunction<\/p>\n\n\n\n
Conservative Treatment<\/p>\n\n\n\n
The choice of treatment depends on the underlying cause of erectile dysfunction and is determined by a physician.<\/p>\n\n\n\n
Phosphodiesterase type 5 (PDE5) inhibitors include medications such as sildenafil, tadalafil, and vardenafil.<\/p>\n\n\n\n
These medications must not be used together with nitrates or nitric oxide donors because the combination can cause a dangerous decrease in blood pressure.<\/p>\n\n\n\n
If erectile dysfunction is associated with clinically confirmed testosterone deficiency, testosterone replacement therapy may be considered after appropriate medical evaluation.<\/p>\n\n\n\n
Different formulations of testosterone are available, including transdermal gels and long-acting injectable preparations.<\/p>\n\n\n\n
Vacuum therapy involves placing the penis inside a cylinder connected to a pump. Air is removed from the cylinder, creating negative pressure that increases blood flow into the penis and helps produce an erection.<\/p>\n\n\n\n
If oral treatment is ineffective, contraindicated, or unsuitable, alprostadil may be considered.<\/p>\n\n\n\n
Alprostadil improves penile blood flow and can be administered by intracavernosal injection. In some settings, an intraurethral formulation may also be available.<\/p>\n\n\n\n
If psychological factors contribute to erectile dysfunction, psychotherapy or sex therapy may be beneficial.<\/p>\n\n\n\n
Therapy may involve the patient alone or together with a partner and can address anxiety, relationship difficulties, emotional problems, sexual expectations, and other factors that may interfere with sexual function.<\/p>\n\n\n\n
Cognitive behavioral therapy (CBT) may also be useful when anxiety, negative beliefs, unrealistic expectations, or other psychological factors contribute to erectile dysfunction.<\/p>\n\n\n\n
CBT helps identify and modify patterns of thought and behavior that may negatively affect self-esteem, sexuality, relationships, and sexual performance.<\/p>\n\n\n\n
Surgical Treatment<\/p>\n\n\n\n
Surgical treatment may be considered when there is a clearly identified anatomical or vascular abnormality or when other treatment options have been ineffective or are unsuitable.<\/p>\n\n\n\n
In selected patients with specific arterial injuries, vascular reconstructive surgery may be considered.<\/p>\n\n\n\n
Another surgical treatment option is implantation of a penile prosthesis (penile prosthetic surgery).<\/p>\n\n\n\n
Erectile Dysfunction and Impotence<\/p>\n\n\n\n
Impotence is an older term traditionally used to describe a persistent inability to achieve or maintain an erection sufficient for sexual intercourse. The modern medical term is erectile dysfunction.<\/p>\n\n\n\n
Erection is a complex physiological process involving vascular, neurological, hormonal, psychological, and anatomical mechanisms. Dysfunction at any of these levels may interfere with the ability to achieve or maintain an erection.<\/p>\n\n\n\n
The main categories are:<\/p>\n\n\n\n
Organic erectile dysfunction \u2014 caused by physical factors affecting the vascular, neurological, hormonal, or anatomical mechanisms required for erection;<\/p>\n\n\n\n
Psychogenic erectile dysfunction \u2014 primarily associated with psychological factors that interfere with sexual arousal and erectile response;<\/p>\n\n\n\n
Mixed erectile dysfunction \u2014 a combination of organic and psychogenic factors. This is common because physical erectile difficulties may contribute to psychological distress and vice versa.<\/p>\n\n\n\n
Signs and Symptoms of Erectile Dysfunction<\/p>\n\n\n\n
Reduced or absent ability to achieve an erection despite sexual stimulation;<\/p>\n\n\n\n
An erection that develops but is not sufficiently firm for sexual intercourse;<\/p>\n\n\n\n
Inability to maintain an erection long enough to complete sexual intercourse;<\/p>\n\n\n\n
Changes in ejaculation, including premature ejaculation in some patients;<\/p>\n\n\n\n
Reduced frequency or absence of spontaneous morning or nighttime erections;<\/p>\n\n\n\n
Reduced libido (sexual desire), particularly when hormonal or psychological factors are involved.<\/p>\n\n\n\n
Causes and Risk Factors for Erectile Dysfunction<\/p>\n\n\n\n
Psychological factors;<\/p>\n\n\n\n
Physical exhaustion;<\/p>\n\n\n\n
Endocrine disorders;<\/p>\n\n\n\n
Neurological disorders;<\/p>\n\n\n\n
Diabetes mellitus;<\/p>\n\n\n\n
Obesity and significant nutritional deficiencies;<\/p>\n\n\n\n
Vascular disease;<\/p>\n\n\n\n
Cardiovascular disease and hypertension;<\/p>\n\n\n\n
Severe liver disease and liver failure;<\/p>\n\n\n\n
Alcohol misuse, smoking, recreational drug use, and other forms of intoxication;<\/p>\n\n\n\n
Diseases and injuries affecting the male reproductive organs;<\/p>\n\n\n\n
Certain medications.<\/p>\n","protected":false},"excerpt":{"rendered":"
Erectile dysfunction (ED) is the persistent inability of a man to achieve or maintain an erection sufficient for satisfactory sexual intercourse and sexual activity. Erectile dysfunction is generally considered a persistent or recurrent problem rather than an occasional difficulty with erection. The term \u201cimpotence\u201d is now used less frequently because \u201cerectile dysfunction\u201d is a more […]<\/p>\n","protected":false},"featured_media":0,"menu_order":0,"template":"","class_list":["post-383","disease","type-disease","status-publish","hentry"],"yoast_head":"\n