Erectile dysfunction, often shortened to ED, is the consistent difficulty getting or keeping an erection firm enough for sex. The keyword is consistent. One off night after a long day, three glasses of pinotage and four hours of sleep is not erectile dysfunction. A pattern that runs for several weeks, that you can no longer dismiss, usually is.
Around the world, ED affects more than 150 million men. In South Africa, surveys and clinical estimates put the figure at over 11 million men, with around four in ten men over 40 reporting some degree of difficulty. Younger men are not exempt either. The newer data suggests roughly one in four men under 40 will deal with ED at some stage.
The Clinical Definition
Doctors define erectile dysfunction as a persistent inability to achieve or maintain an erection sufficient for satisfactory sexual performance. Three things matter in that sentence:
- Persistent. Not one off. The accepted threshold is at least three months in most clinical settings, though many doctors will treat earlier if it is causing distress.
- Achieve or maintain. Some men cannot get an erection at all. Others get one and lose it before or during sex. Both count.
- Satisfactory sexual performance. Not perfect, not porn standard. Sufficient to do what you want to do.
Worth knowing: morning erections, masturbation erections, and partnered erections are slightly different events neurologically. If you wake up with erections but cannot get one with a partner, that tells your doctor something specific about the likely cause.
The Different Patterns Of ED
Not all ED looks the same. Clinicians usually sort it into a few patterns, because the pattern points to the likely cause.
Sudden Onset, Situational
You were fine until a recent event. A new partner, a stressful job change, a relationship issue, a recent course of medication. Erections still happen on your own or in the morning. This pattern almost always has a psychological or situational driver.
Gradual Onset, Across All Situations
It crept up. Erections are weaker on your own, weaker in the morning, weaker overall. This pattern usually has a physical contributor. Cardiovascular changes, diabetes, hormonal shifts, or medication side effects are common culprits.
Mixed
Both physical and psychological factors at play. This is the most common picture, especially in men in their late 30s onwards. A physical issue creates one bad experience, anxiety builds, and the anxiety itself starts driving the problem.
What ED Is Not
A few things get lumped in with ED that are actually different conditions. Worth separating, because the treatments are different.
- Low libido. Wanting sex less is a desire problem, not an erection problem. They can coexist but they are not the same.
- Premature ejaculation. Finishing sooner than you want to is a separate condition called PE. Some treatments overlap, others do not. We have a dedicated page on PE.
- Delayed ejaculation. Difficulty reaching orgasm despite a good erection. Different condition again.
- Anorgasmia. Inability to reach orgasm. Different again.
Why ED Matters Beyond The Bedroom
This is the part most men do not realise. ED is sometimes the first noticeable symptom of cardiovascular disease. The arteries that supply the penis are smaller than those supplying the heart. They tend to narrow first. A man who develops gradual ED in his mid 40s without an obvious psychological cause should also have his blood pressure, cholesterol, and blood sugar checked.
That is not a reason to panic. It is a reason to take the issue seriously rather than ignore it. ED is, in that sense, a useful messenger.
Talk To A Doctor About Your Symptoms
An online consultation lets you describe what is happening privately, and have a registered SA doctor work out whether medication is safe and appropriate for you.
Start ConsultationHow ED Is Diagnosed
The diagnosis is largely clinical, meaning it comes from your history rather than a test. The doctor will want to know:
- How long it has been going on
- Whether it happens always or in certain situations
- Whether you still get morning erections or erections during masturbation
- Your medical history, particularly cardiovascular health, diabetes, blood pressure
- Medications you are currently on
- Lifestyle factors like smoking, alcohol, sleep, stress
- Relationship context
In some cases, additional tests are useful. Blood tests for testosterone, fasting glucose, and lipids can pick up an underlying cause. Most men do not need anything beyond the consultation to start treatment, though.
Treatment Works In Most Cases
The good news, and it is genuinely good news, is that ED is one of the most treatable conditions in medicine. Roughly seven in ten men respond well to first line oral medication. Lifestyle adjustments improve outcomes further. Where medication is not enough on its own, there are second line options. Almost nobody is left without something that helps.
Common First Steps
- An oral PDE5 inhibitor like sildenafil or tadalafil, prescribed at an appropriate dose
- Lifestyle changes that have evidence behind them, particularly cardio and sleep
- Managing contributing conditions like high blood pressure or diabetes
- Addressing performance anxiety, where relevant, with a partner or briefly with a counsellor
Related Reading
Frequently Asked
No. Most men experience occasional difficulty, especially when tired, stressed, drunk, or distracted. Erectile dysfunction is defined by a consistent pattern over weeks to months, not a single off night.
ED becomes more common with age, but it is not exclusive to older men. Around 25% of men under 40 experience it. The cause is often different in younger men, with anxiety and lifestyle factors playing a larger role than vascular disease.
Usually not. Most cases are treatable, especially when underlying contributors like stress, sleep, blood pressure, or diabetes are addressed alongside medication.
Sometimes. ED can be an early warning sign of cardiovascular disease, diabetes, or low testosterone. That is one of the reasons a proper consultation matters. It is not just about getting a tablet.