Why ED is a medical condition, not a personal failing
Erectile dysfunction — the consistent inability to achieve or maintain an erection sufficient for satisfactory sexual activity — affects an estimated 30–40% of urban Indian men over the age of 40, based on Apollo Hospitals andrology data. The figure is almost certainly an underestimate, given the stigma that prevents most affected men from seeking evaluation.
The clinical importance of ED extends beyond its immediate impact on sexual function. Extensive research over the past two decades has established that ED is frequently a marker of underlying endothelial dysfunction — the same vascular impairment that precedes coronary artery disease and stroke. The penile arteries, which must dilate to allow sufficient blood flow for erection, are smaller in diameter than coronary arteries. Vascular disease that is too mild to produce chest pain during exertion may already be sufficient to impair erectile function. ED may precede cardiovascular events by two to five years.
This makes the evaluation of ED not merely a sexual health question but a cardiometabolic one.
The organic and psychogenic distinction
Not all ED has the same cause. Two broad categories are relevant:
Organic ED — driven by physiological impairment: vascular disease reducing arterial inflow, venous leak allowing blood to escape from the corpus cavernosum, neurological impairment from diabetes or pelvic surgery, or hormonal deficiency. Organic ED typically develops gradually, affects nocturnal and morning erections (which require no psychogenic stimulus), and is consistent across contexts.
Psychogenic ED — driven by anxiety, depression, relationship conflict, or performance anxiety. More common in younger men. Typically variable: the patient may have intact nocturnal erections and may function normally in some contexts but not others. Rapid in onset, often situational.
In practice, the distinction is not absolute. A man who develops organic ED in his 40s may develop performance anxiety in response, which adds a psychogenic component. A man whose ED is primarily psychogenic may develop secondary organic changes if the condition is untreated for years.
The evaluation distinguishes between these, because the appropriate management differs.
The clinical evaluation
An adequate ED evaluation includes:
Medical history. Cardiovascular risk factors — hypertension, dyslipidaemia, diabetes, smoking, obesity — are the most important context for organic ED. The presence and severity of these risk factors determines the pre-test probability of a vascular cause. A 45-year-old with three metabolic risk factors and gradually progressive ED is overwhelmingly likely to have an organic cause.
Sexual and relationship history. Onset (gradual vs sudden), consistency (partner-specific vs universal), relationship with nocturnal erections, and presence of psychosocial stressors all inform the organic-psychogenic distinction.
Medication review. A significant number of medications impair erectile function: antihypertensives (particularly beta-blockers and thiazide diuretics), antidepressants (SSRIs, tricyclics), antiandrogens, antipsychotics, and opioids. A medication reconciliation may identify a reversible iatrogenic contribution.
Blood tests. The metabolic and hormonal evaluation includes:
- Fasting glucose and HbA1c: diabetes and prediabetes cause erectile dysfunction through both neuropathic and vascular mechanisms
- Lipid panel: dyslipidaemia is a major driver of endothelial dysfunction
- Total and free testosterone: testosterone deficiency is associated with ED and significantly reduces the response to PDE5 inhibitors; hypogonadism should be treated before or alongside ED management
- Prolactin: hyperprolactinaemia suppresses testosterone
- Thyroid panel: both hypothyroidism and hyperthyroidism are associated with ED
- Complete blood count: anaemia reduces oxygen delivery to tissues
Cardiovascular risk assessment. Given the vascular nature of most organic ED, an assessment of cardiovascular risk — using tools such as the Framingham Risk Score or the SCORE framework — is appropriate in men above 40. Patients with intermediate or high cardiovascular risk may warrant formal cardiac evaluation before sexual activity is resumed, particularly if they have been sedentary.
What the evaluation leads to
The specific management depends on the findings. A man with testosterone deficiency and ED may see substantial improvement from hormone management alone. A man with well-controlled metabolic risk factors and mild-moderate ED is likely to be a good candidate for PDE5 inhibitors. A man with severe cardiovascular disease whose ED is of recent onset may need cardiac evaluation before any treatment.
The evaluation is not an obstacle to treatment — it is the foundation of treatment that is specific to the individual, rather than generic.