Top Tip n° 35 Top Tips in Two minutes: Erectile Dysfunction (ED)
ED is increasingly becoming a common presentation to GPs. Prevalence of complete ED: 5% in
40yr-olds, 10% in 60s, 15% in 70s and 30-40%in 80s.
• Can have a severe effect on psychological and social well-being, and can negatively impact
• May be a marker for hypertension, diabetes or depression
Causes: Vascular (33%), DM (25%) (Diabetes Mellitus), Nerve disorder (8%), Pelvic surgery (7%), Drugs (6%), Psychogenic (10-15%) Most can be managed in primary care. Can initiate treatment after correction of reversible risk factors due to the availability of oral agents e.g. Viagra (Sildenafil), Levitra (Vardenafil), Cialis (Tadalafil) and Uprima (Apomorphine))
• History: differentiate physical (gradual onset, loss of nocturnal/morning erections) from
psychogenic (sudden onset, maintains nocturnal erections, often associated relationship
problems), smoking, drugs including recreational, alcohol
• Physical Exam: external genitalia - phimosis, balanitis, penile ulceration, a short penile
frenulum & penile induration due to Peyronie’s disease. Any painful, penile condition may
inhibit erection simply by virtue of the pain it induces. Also assess general body habitus for
What next and when:
• Urine dip for DM (+/- blood glucose),
• Hormone tests including testosterone, FSH/LH (pituitary hypogonadism), Prolactin (prolactin
• LFTs (liver disease) • Blood lipids, • (+/- PSA if LUTs or abnormal DRE) (Lower Urinary Tract Symptoms) (Digital Rectal
• Specific tests e.g. cavernography etc rarely necessary for specific conditions (e.g. venous
• Investigate and exclude treatable causes (including drugs) • Treat risk factors (if possible) • Address life-style issues • Consider psychosexual counselling, couple therapy or psychiatric referral if predominantly
psychogenic ED although physical treatment may be used in selected patients
• First-line treatment for organic erectile dysfunction is a PDE-5 inhibitor, initiated in general
practice; this is effective in 65-75% of patients regardless of the cause of the erectile dysfunction
• Other treatments are only indicated if PDE-5 inhibitors are ineffective, associated with severe
side-effects or contraindicated (because of concomitant use of nitrates, either for angina or recreationally), alternative oral treatment Apomorphine
Consider urological referral if above failed or contraindicated for other options including: Self-administered penile prostaglandin injections (Caverject®),Intra-urethral administration of prostaglandin (MUSE®), Vacuum erection assistance devices, Insertion of penile prostheses, Re-vascularisation of the penis using by-pass surgery or angioplastyWhere else:
Flow chart on investigation and management, Guidelines, information and referral protocol available
Referrals to Urology Department, Addenbrooke’s Hospital or Hinchingbrooke Hospitals.
References:
Drug & Therapeutics Bulletin (2004) 42, 49-52
Web links: Who are you:
Nimish Shah, Consultant Urologist, Addenbrooke’s and Hinchingbrooke
Review date: Review due:
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