Prostate Enlargement & Urination Problems: Causes & Symptoms

Benign Prostatic Hyperplasia (BPH)

Non-cancerous growth of prostate stromal/epithelial cells. Prevalence: 50% at 60, 90% at 85. Not all enlarged prostates cause symptoms.

Symptoms (LUTS — Lower Urinary Tract Symptoms)

Voiding (Obstructive)

• Hesitancy, straining
• Weak/interrupted stream
• Terminal dribbling
• Feeling of incomplete emptying

Storage (Irritative)

• Frequency (day/night)
• Urgency (± urge incontinence)
• Nocturia (≥2×/night bothersome)

Complications

• Acute urinary retention (AUR) — emergency catheterization.
• Recurrent UTIs, bladder stones, hydronephrosis/renal failure (late).
• Gross hematuria.

Evaluation

• IPSS (International Prostate Symptom Score) + QoL question.
• DRE (size, consistency, nodules).
• PSA (age-adjusted).
• Urinalysis, PVR ultrasound, uroflowmetry.
• Urodynamics if surgical candidate or neurogenic suspicion.

Treatment Ladder

Lifestyle (First-Line)

• Fluid management (limit evening, avoid caffeine/alcohol).
• Timed voiding, double voiding.
• Constipation management.
• Regular exercise.

Medications

• α-blockers (tamsulosin, alfuzosin, silodosin): Rapid symptom relief (days). Side effects: ejaculatory dysfunction, orthostatic hypotension.
• 5-ARIs (finasteride, dutasteride): Shrink prostate 20–30% over 6–12 mo. Reduce AUR/surgery risk. Sexual side effects.
• Combination (α-blocker + 5-ARI): Superior for larger prostates (>30–40 g).
• PDE5 inhibitor (tadalafil 5 mg daily): Improves LUTS + ED.

Minimally Invasive / Surgical

• Rezūm (water vapor), UroLift (implants), iTIND — office-based, preserve ejaculation.
• TURP (gold standard), HoLEP, ThuLEP, Aquablation — durable, sexual side effects (retrograde ejaculation 65–90%).
• Simple prostatectomy (open/robotic) for >80–100 g.

Shared Decision-Making

Balance symptom bother, prostate size, sexual function preservation, comorbidity, and patient preference.