Erectile Dysfunction: Causes, Tests and Treatment Options in Istanbul

What Counts as Erectile Dysfunction

Erectile dysfunction (ED) is the persistent or recurrent inability to achieve or maintain an erection sufficient for satisfactory intercourse. Isolated failures, which almost every man experiences, do not meet that definition; the problem is assessed when it has lasted at least three months. Roughly half of men over 40 are affected to some degree, and the proportion rises with age — but ED is not rare in younger men either.

Why It Happens

An erection depends on a chain: brain, nerves, hormones, arteries and the erectile tissue itself. Cerebral arousal widens the penile arteries, the spongy tissue fills with blood, and the filled tissue compresses the veins so blood stays in. A fault anywhere along that chain impairs the erection. ED is therefore a symptom, not a disease in itself.

Vascular — the most common cause. The penile arteries are among the narrowest in the body, so atherosclerosis shows there first. This is why ED can appear two to five years before coronary artery disease announces itself. Diabetes, hypertension, high cholesterol, smoking and inactivity are the main risk factors.

Hormonal. Low testosterone (hypogonadism), thyroid disorders, raised prolactin. Low testosterone typically reduces desire as well.

Neurological. Diabetic nerve damage, spinal injury, multiple sclerosis, Parkinson's disease, pelvic surgery (radical prostatectomy, rectal surgery) and radiotherapy.

Medication. Some blood pressure drugs — particularly beta blockers and thiazides — antidepressants, prostate medication (5-alpha reductase inhibitors) and certain psychiatric drugs.

Psychological. Performance anxiety, depression, stress, relationship difficulties; more often prominent in younger men. Preserved morning and masturbatory erections point towards a psychogenic cause, though psychological and organic factors frequently coexist.

Lifestyle and structural. Smoking, excess alcohol, obesity, sleep apnoea, and Peyronie's disease (a plaque causing curvature).

The Tests Worth Doing

1. Detailed history — onset (sudden or gradual), morning erections, desire, ejaculation, relationship context, medication, smoking and alcohol. The IIEF questionnaire quantifies severity.

2. Examination — penis, testes, pulses, prostate where age-appropriate, secondary sexual characteristics.

3. Blood tests — fasting glucose or HbA1c, lipid profile, morning total testosterone; prolactin, thyroid and PSA where indicated.

4. Penile Doppler ultrasound — arterial inflow and venous leak measured after an intracavernosal injection. The most informative test for confirming a vascular cause and choosing treatment, though not every man needs it.

Every man presenting with ED should also have his cardiovascular risk assessed. An ED diagnosis is sometimes the first clue to silent heart disease.

Treatment, Step by Step

1. Treat the cause and the lifestyle. Controlling diabetes and blood pressure, losing weight, stopping smoking and exercising regularly can improve ED on their own and make every other treatment work better. Where a drug is responsible, it can be changed under medical supervision; where testosterone is low, replacement is considered in suitable men. Where a psychological component exists, sex therapy — ideally involving the partner — matters.

2. Oral medication (PDE5 inhibitors). Sildenafil, tadalafil, vardenafil and avanafil strengthen the vascular response when sexual stimulation is present; they do not create an erection on their own. Most men respond. Tadalafil's long action also suits low-dose daily use. Headache, flushing, nasal congestion and indigestion are the usual side effects. They must never be combined with nitrate heart medication (isosorbide, nitroglycerin), which causes a dangerous drop in blood pressure. Use prescribed medication and avoid counterfeit products sold online.

3. Low-intensity shockwave therapy (Li-ESWT). Low-energy sound waves applied externally aim to stimulate new vessel formation. Painless, no anaesthesia, typically 6-12 sessions. It may help men with mild to moderate vascular ED who respond partially to tablets. Guidelines describe it as an option in selected patients rather than a standard for everyone; long-term evidence is still accumulating.

4. Vacuum erection device. A cylinder draws blood into the penis, held by a ring at the base. Drug-free and safe; particularly useful in rehabilitation after prostate surgery and for men who cannot take tablets.

5. Intracavernosal injection. Alprostadil, alone or in combination, injected into the side of the penis before intercourse. Highly effective in men who do not respond to tablets; the first doses are titrated under medical supervision. Dose rules must be followed because of the risk of a prolonged erection (priapism).

6. Penile implant. The definitive solution when other methods fail or are unsuitable. Inflatable three-piece implants (a pump in the scrotum inflates and deflates them, giving the most natural result) or malleable semi-rigid devices allow an erection whenever wanted. Sensation, orgasm and ejaculation are unaffected. Patient and partner satisfaction is the highest of all ED treatments; infection is the main risk, reduced by modern antibiotic-coated devices. Surgery takes about an hour, with one night in hospital and a return to sexual activity after 4-6 weeks.

When to Seek Help

Erectile difficulty lasting more than three months, loss of morning erections, a marked drop in desire, penile curvature or pain, or symptoms starting before the age of 40 all deserve assessment. ED is a treatable medical condition — and often a valuable opportunity to protect your cardiovascular health.

This article is for general information only and does not replace a medical consultation. Treatment decisions are made after an individual evaluation of your reports and examination.