If you’ve noticed that you no longer get erections, or that they’ve become so infrequent and unreliable that sex has effectively stopped, you’re dealing with one of the most distressing sexual health concerns a man can experience. The frustration is real. The impact on confidence and relationships is real. And the good news, which needs to be stated clearly at the start: this is almost always caused by something identifiable and treatable.

This guide explains why a man may stop getting erections entirely, what the most important warning signs are, what the range of causes and treatments looks like, and what happens at a specialist assessment at Sandton Men’s Clinic. We’ve written it to give you genuine information, not vague reassurance.

First: Is This One Occasion or a Persistent Pattern?

One-Off vs Persistent — Why This Distinction Matters

One-off or rare: Not getting an erection on a specific occasion, due to alcohol, extreme fatigue, acute stress, or anxiety, is a normal experience that virtually every man has had at some point. It is not erectile dysfunction. No treatment is required.

Persistent: Consistently not getting erections, across multiple occasions, in multiple situations, over several weeks or more, is clinically significant. This is erectile dysfunction, and it has identifiable, treatable causes in the vast majority of cases.

The key diagnostic signal: morning erections. If you wake with erections (even occasionally), the physical erectile mechanism is broadly intact, and psychological factors are more likely driving the problem. If morning erections have also stopped or severely diminished, a physical cause is highly probable.

Why Men Stop Getting Erections: The Complete Picture

Complete absence of erections, rather than weak or infrequent ones, typically has one or more of the following underlying drivers:

Vascular Disease — The Most Common Physical Cause

An erection requires substantial arterial blood flow into the corpora cavernosa. When the arteries supplying the penis are significantly narrowed by atherosclerosis, hypertension, or diabetes, blood flow is insufficient to produce even a partial erection. Men with advanced vascular disease often find that erections become progressively weaker over months or years until they stop occurring entirely.

This is clinically urgent: the penile arteries are smaller than the coronary arteries and are affected by vascular disease earlier. A man with complete erectile failure and cardiovascular risk factors needs both an erectile dysfunction assessment and a cardiovascular evaluation. See: what causes ED in men over 50.

Severe Testosterone Deficiency

Testosterone supports penile smooth muscle health, libido, and the neural responsiveness required for erection. When testosterone falls severely, whether from age-related decline, pituitary dysfunction, or other causes, erections can cease entirely rather than just weaken. This is typically accompanied by absent morning erections, very low libido, significant fatigue, and mood changes.

Testosterone deficiency is diagnosed by a blood test. It is not diagnosed by symptoms alone. See: low libido treatment and how to revive libido.

Neurological Causes

Erections require intact nerve signalling from the brain, spinal cord, and peripheral nerves. Conditions that damage these pathways can produce complete erectile failure:

  • Diabetes — diabetic neuropathy damages both the small blood vessels and peripheral nerves required for erection; men with long-standing, poorly controlled diabetes are at particular risk
  • Post-prostatectomy nerve damage — radical prostatectomy for prostate cancer commonly severs or damages the cavernous nerves running alongside the prostate; erectile function can be significantly impaired for months to years post-surgery
  • Spinal cord injury or compression — spinal disease, trauma, or surgical complications affecting relevant cord levels can abolish erectile function
  • Multiple sclerosis and Parkinson’s disease — both can disrupt the neurological pathways for erection

Psychological Causes — Including Severe Performance Anxiety

Complete psychological erectile failure is less common than partial failure, but it occurs, particularly when performance anxiety has become so severe that all sexual situations trigger an immediate sympathetic (stress) response that prevents any erection. Men in this pattern typically find that erections occur normally during sleep and on waking (confirming the physical mechanism is intact) but fail completely in all sexual contexts.

Depression, severe generalised anxiety, relationship breakdown, and trauma can all produce complete erectile failure. These require psychological support alongside any medical management. See: erection problems.

Medication Side Effects

Several classes of medication can produce severe or complete erectile failure as a side effect:

  • 5-alpha reductase inhibitors (finasteride, dutasteride) — for hair loss or BPH; documented association with persistent sexual dysfunction in some men, including after cessation
  • Antidepressants (SSRIs, SNRIs) — sexual dysfunction is the most common reason for non-adherence
  • Antipsychotics — through prolactin elevation and dopamine pathway effects
  • Opioid analgesics — chronic use suppresses testosterone through hypothalamic-pituitary-gonadal axis suppression
  • Some antihypertensives — particularly beta-blockers and spironolactone

If erectile failure began or worsened after starting a medication, this is critical clinical information. Never stop prescribed medication without medical guidance — discuss alternatives with your prescribing doctor.

Structural and Anatomical Causes

  • Severe Peyronie’s disease — fibrotic plaques can restrict arterial inflow sufficiently to impair erection in advanced cases, in addition to causing curvature and shortening. If you’ve noticed a hard lump, new curve, or pain, see: penile stretching and Peyronie’s disease
  • Penile venous leak — inadequate venous occlusion means blood escapes the corpora cavernosa as fast as it enters, preventing erection from developing or being sustained

Hormonal Disorders Beyond Testosterone

  • Elevated prolactin (hyperprolactinaemia) — suppresses testosterone and can abolish libido and erection; may indicate a pituitary adenoma requiring imaging and specialist referral
  • Thyroid dysfunction — both severe hypothyroidism and hyperthyroidism can impair erectile function
  • Adrenal disorders — rare but documented causes of complete sexual dysfunction

Reading Your Pattern: What Your Experience Tells You

No erections at all, morning or otherwise

  • Most Likely Cause: Advanced vascular disease, severe testosterone deficiency, neurological cause, or severe psychological disorder
  • Most Important First Step: Medical assessment: blood panel (testosterone, glucose, cholesterol), cardiovascular evaluation

Morning erections present, none in sexual situations

  • Most Likely Cause: Performance anxiety, depression, or relationship factors — physical mechanism intact
  • Most Important First Step:  Psychological support and a short-term PDE5 inhibitor to rebuild confidence while addressing psychology

Erections stopped after starting a medication

  • Most Likely Cause: Drug-induced erectile failure
  • Most Important First Step: Urgent medication review with prescribing doctor; do not stop medication alone

Erections declined and stopped over months to years

  • Most Likely Cause: Progressive vascular disease or declining testosterone
  • Most Important First Step: Medical assessment; vascular and hormonal workup; cardiovascular risk review

Stopped after prostate surgery

  • Most Likely Cause: Post-surgical nerve damage
  • Most Important First Step: Penile rehabilitation programme: PDE5 inhibitor + VED + traction; specialist follow-up

Stopped with pain, curve, or penile lump

  • Most Likely Cause: Peyronie’s disease with severe impact on erection
  • Most Important First Step: Clinical assessment; traction therapy; specialist urological referral if indicated

Stopped with very low libido, fatigue, and mood changes

  • Most Likely Cause: Severe testosterone deficiency or prolactin excess
  • Most Important First Step: Blood panel: testosterone, LH, FSH, prolactin; hormonal management

Warning Signals That Need Prompt Medical Attention

See a doctor urgently if:

  • Erections have stopped completely — not weakened, but absent — for more than 3 months
  • Morning erections have also stopped, alongside complete daytime failure (strong physical cause signal)
  • You have cardiovascular risk factors: diabetes, hypertension, high cholesterol, smoking, and obesity
  • Erections stopped suddenly rather than gradually — possible vascular event or medication trigger
  • You also have difficulty urinating, pelvic pain, or blood in urine — prostate or urological issue
  • Libido has also completely vanished alongside the loss of erection – a possible hormonal emergency
  • You’ve started on a new medication within the last 3 months—possible drug-induced cause
  • You have significant depression or suicidal ideation associated with erectile failure — this needs immediate mental health support alongside medical care

What the Evidence-Based Treatment Pathway Looks Like

The right treatment depends entirely on the cause identified through assessment. Here is what the evidence-based pathway looks like for each major category:

For Vascular Causes

Oral PDE5 inhibitors (sildenafil, tadalafil, avanafil) are the first-line pharmacological treatment, but in severe vascular disease, they may be only partially effective. The most durable long-term approach is addressing the underlying vascular disease: blood pressure optimisation, lipid management, glycaemic control in diabetics, smoking cessation, and aerobic exercise.

For men where oral medication is insufficient, penile injection therapy (intracavernosal alprostadil-based combinations) produces reliable erections locally regardless of vascular status. Vacuum erection devices provide immediate mechanical support. In severe, treatment-resistant vascular ED, penile implants are a definitive option. See: pills to increase blood flow to the penis.

For Hormonal Causes

Confirmed testosterone deficiency, demonstrated on blood testing, not assumed from symptoms, is treated with testosterone replacement therapy. In men with confirmed hyperprolactinaemia, cabergoline or bromocriptine reduces prolactin and often restores erectile function. Thyroid disorders are managed according to the specific pathology.

Important: testosterone treatment without a confirmed diagnosis carries risks (haematocrit elevation, cardiovascular markers, fertility suppression) and will not help men whose erectile failure has a vascular rather than hormonal cause.

For Neurological Causes — Including Post-Surgical

Post-prostatectomy penile rehabilitation has the strongest evidence: PDE5 inhibitors started early (sometimes before surgery), vacuum erection devices used regularly to maintain tissue oxygenation, and penile traction therapy to preserve length and promote healing. The goal is to maintain penile health during the period of nerve recovery (which can take 12–24 months). See: benefits of a penis pump.

For Psychological Causes

For complete psychogenic erectile failure, where morning erections confirm the physical mechanism is intact, cognitive-behavioural therapy (CBT) and sex therapy are the most effective primary interventions. Short-term use of a PDE5 inhibitor can restore confidence while psychological work addresses the anxiety cycle. This combined approach produces better outcomes than either alone.

For Medication-Induced Causes

Medication substitution within the same therapeutic class is the primary intervention; many classes have alternatives with lower ED risk. In cases where the medication cannot be changed, adding a PDE5 inhibitor (where not contraindicated) often restores function. See: which medicine cures erectile dysfunction.

What a Sandton Men’s Clinic Assessment Provides

What Happens at Your Consultation

  • ✔  Comprehensive medical and sexual history — timeline of loss, pattern, associated symptoms, morning erections
  • ✔  Blood panel — testosterone, LH, FSH, prolactin, glucose, HbA1c, cholesterol, thyroid, full blood count
  • ✔  Blood pressure measurement and cardiovascular risk assessment
  • ✔  Medication review — identifying drug-induced causes and exploring alternatives
  • ✔  Personalised diagnosis — not a generic prescription, but an identification of what is actually driving your specific presentation
  • ✔  Same-day treatment where appropriate — prescription issued at consultation
  • ✔  Referral pathway — urological, cardiological, or psychological referral where indicated
  • ✔  Follow-up plan — because complete erectile failure is rarely resolved in a single visit; ongoing management is provided
  • ✔  24/7 availability — same-day appointments, no referral needed, complete confidentiality

Consultations from R2,500 (private pay). See: does Sandton Men’s Clinic take medical aid? We treat: erectile dysfunction, weak erections, low libido, premature ejaculation. Find out why men across Gauteng choose Sandton Men’s Clinic.

Summary: I Don’t Have an Erection — What to Know

  1. One-off failure is not erectile dysfunction — alcohol, extreme fatigue, or acute anxiety can prevent erection on one occasion. Persistent failure across multiple situations over weeks is clinically significant.
  2. Morning erections are the key diagnostic signal — present means the physical mechanism is intact (look for psychological causes); absent strongly suggests a physical cause.
  3. The most common physical causes are vascular, hormonal, or neurological — all identifiable with blood testing, cardiovascular assessment, and clinical history.
  4. Medication is a frequently missed cause — if erections stopped after starting a drug, this is the most likely explanation. Do not stop medication without medical guidance.
  5. Most cases are treatable — oral medication, testosterone therapy, injection therapy, vacuum devices, psychological support, and penile rehabilitation all have strong evidence for specific causes.
  6. Complete erectile failure with cardiovascular risk factors warrants cardiac assessment — not just an ED prescription. The penile arteries are an early warning system for systemic vascular disease.
  7. Book a consultation — Sandton Men’s Clinic, 24/7, same-day, specialist assessment from R2,500. No referral needed.

Frequently Asked Questions

Why do I have no erection at all?

Complete absence of erections is most commonly caused by significant vascular disease (insufficient blood flow to the penis), severe testosterone deficiency, neurological damage, medication side effects, or severe psychological factors. The pattern matters: if morning erections are also absent, a physical cause is likely. If morning erections are present, psychological causes are more probable. A blood panel and clinical assessment at Sandton Men’s Clinic identify the specific driver.

Is not getting an erection the same as erectile dysfunction?

Yes — complete inability to achieve an erection is the most severe presentation of erectile dysfunction. It is more clinically urgent than weak or unreliable erections, as it typically indicates a more advanced underlying cause. However, ‘most severe’ does not mean ‘untreatable.’ Complete erectile failure has identifiable causes that respond to targeted treatment in the majority of cases. See: can weak erection be cured?.

Can ED be cured when erections have completely stopped?

In many cases, yes, or very significantly improved. Drug-induced erectile failure resolves when the offending medication is changed. Hormonal erectile failure responds to targeted hormone replacement. Psychogenic erectile failure responds to psychological support and sometimes short-term medication. Post-surgical erectile failure often improves with rehabilitation over 12–24 months. Vascular erectile failure is managed with oral medication, lifestyle change, and second-line options (injections, vacuum devices) where needed. See: how to fix erectile dysfunction.

What should I do tonight if I’m not getting an erection?

For tonight: avoid alcohol (a direct erectile suppressant); stay warm (vasoconstriction from cold reduces penile blood flow); reduce pressure — taking penetrative sex off the agenda paradoxically reduces anxiety and may allow erection. If you have a legitimate prescription for sildenafil or tadalafil, take it correctly (sildenafil on an empty stomach, 30–60 minutes before, with sexual stimulation required). If you don’t have a prescription, Sandton Men’s Clinic is open 24/7 and can provide a same-day prescription where clinically appropriate. See: how to get a strong erection immediately.

Should I be worried about my heart if I’m not getting erections?

If you have cardiovascular risk factors — high blood pressure, diabetes, high cholesterol, smoking, significant abdominal obesity, or family history of heart disease — then yes, complete erectile failure should be taken seriously as a potential cardiovascular indicator. Penile arteries are smaller than coronary arteries and are affected by atherosclerosis earlier. A Sandton Men’s Clinic consultation includes cardiovascular risk assessment alongside ED management, addressing both the symptom and the underlying cause.

My erections stopped after prostate surgery. Will they come back?

Nerve recovery after radical prostatectomy is possible, particularly with nerve-sparing techniques. Recovery takes time — typically 12–24 months — and is significantly improved with penile rehabilitation started early: PDE5 inhibitors (sometimes pre-operatively), vacuum erection device use for tissue oxygenation, and penile traction therapy. The evidence supports starting rehabilitation as early as possible rather than waiting to see if function returns spontaneously. See: benefits of a penis pump.

What medicines help when you have no erection?

The first-line pharmacological options are prescription PDE5 inhibitors: sildenafil (Viagra), tadalafil (Cialis), avanafil (Stendra), and vardenafil (Levitra). These work in 30–60 minutes and require sexual stimulation. For men who don’t respond adequately to oral medication, penile injection therapy with alprostadil-based combinations is highly effective regardless of vascular status. Testosterone therapy is appropriate where a confirmed deficiency is driving the problem. See: instant erection pills — what works and which medicine cures erectile dysfunction.