Benign Prostatic Hyperplasia (BPH)

Causes

• Aging: BPH rarely causes symptoms before age 40, but more than half of men in their 60s and up to 90% in their 70s and 80s have some symptoms of BPH.
• Hormonal Changes:
  • Dihydrotestosterone (DHT): A powerful male hormone that stimulates prostate growth. Even with declining testosterone levels as men age, DHT levels remain high or even increase in the prostate, contributing to its enlargement.
  • Estrogen: As men age, the proportion of estrogen relative to testosterone increases, which may also play a role in prostate cell growth.
• Family History: Having a close relative (father or brother) with BPH increases your risk.
• Testicular Function: Men who have had their testicles removed at a young age (before puberty) do not develop BPH, suggesting a role for testicular hormones.
• Chronic Medical Conditions: Conditions like heart disease, circulatory disease, and diabetes may be associated with an increased risk, though the link is not fully clear.
• Obesity: Some studies suggest a correlation between obesity and an increased risk of BPH.

Symptoms

• Frequent or Urgent Need to Urinate: Especially at night (nocturia).
• Difficulty Starting Urination: Hesitancy.
• Weak Urine Stream: Or a stream that stops and starts.
• Dribbling at the End of Urination.
• Inability to Completely Empty the Bladder: Leading to residual urine.
• Straining During Urination.
• Painful Urination (Dysuria): Less common, but can occur with complications like infection.
• Blood in the Urine (Hematuria): Also less common, but can be a sign of complications.
• Urinary Tract Infections (UTIs): Due to incomplete bladder emptying.
• Acute Urinary Retention: A sudden inability to urinate, which is a medical emergency.

Diagnosis

• Medical History: The doctor will ask about your urinary symptoms, their severity, duration, and impact on your quality of life. They will also inquire about any other medical conditions or medications.
• Digital Rectal Exam (DRE): The doctor inserts a gloved, lubricated finger into the rectum to feel the prostate gland. This allows them to assess its size, shape, and consistency, and check for any abnormal areas.
• Urine Test (Urinalysis): To check for infection, blood, or other abnormalities in the urine.
• Blood Test (Prostate-Specific Antigen - PSA): PSA is a protein produced by prostate cells. Elevated PSA levels can indicate BPH, prostate cancer, prostatitis, or other prostate conditions. While not diagnostic for cancer, it's used as a screening tool.
• Urinary Flow Test (Uroflowmetry): You urinate into a special device that measures the speed and volume of your urine flow. A reduced flow rate can indicate an obstruction.
• Post-Void Residual (PVR) Volume Test: Measures the amount of urine remaining in your bladder after you urinate, usually with an ultrasound or catheter. High residual volume suggests incomplete emptying.
• Urodynamic Studies: A series of tests that evaluate bladder and urethra function, often used for more complex cases.
• Cystoscopy: A thin, flexible scope is inserted into the urethra and bladder to visualize the urinary tract and prostate.
• Prostate Biopsy: If there are concerns about prostate cancer (e.g., very high PSA or abnormal DRE), a biopsy may be performed to obtain tissue samples for microscopic examination.

Treatment

• Watchful Waiting: For mild symptoms that are not bothersome. Involves regular check-ups and monitoring of symptoms without immediate intervention.
• Lifestyle Changes:
  • Reduce fluid intake: Especially before bedtime or going out.
  • Avoid caffeine and alcohol: These can irritate the bladder and increase urine production.
  • Avoid decongestants and antihistamines: Can worsen urinary symptoms by constricting the urethra.
  • Timed voiding: Urinate on a schedule, even if you don't feel the urge.
  • Double voiding: Urinate, wait a few minutes, then try to urinate again to fully empty the bladder.
  • Exercise regularly: Can help manage symptoms.
• Medications:
  • Alpha-Blockers: Relax muscles in the prostate and bladder neck, making it easier to urinate. Examples include tamsulosin (Flomax), alfuzosin (Uroxatral), silodosin (Rapaflo), and doxazosin (Cardura).
  • 5-alpha Reductase Inhibitors: Shrink the prostate gland by blocking the production of DHT. Examples include finasteride (Proscar) and dutasteride (Avodart). These take longer to work (up to 6 months) and are often used for larger prostates.
  • Combination Therapy: Often, alpha-blockers and 5-alpha reductase inhibitors are used together for better symptom relief and to reduce BPH progression.
  • PDE5 Inhibitors: Tadalafil (Cialis) is approved to treat BPH symptoms and erectile dysfunction.
• Minimally Invasive Procedures:
  • Transurethral Microwave Therapy (TUMT): Uses microwave heat to destroy excess prostate tissue.
  • Transurethral Needle Ablation (TUNA): Uses low-level radiofrequency energy delivered by needles to burn away prostate tissue.
  • Prostatic Urethral Lift (PUL or UroLift): Implants are used to hold open the enlarged prostate lobes, relieving compression on the urethra.
  • Water Vapor Thermal Therapy (Rezum): Uses steam to destroy obstructive prostate tissue.
  • Prostate Artery Embolization (PAE): Blocks blood flow to the prostate, causing it to shrink.
• Surgical Procedures:
  • Transurethral Resection of the Prostate (TURP): The most common surgical procedure for BPH. A scope is inserted into the urethra, and excess prostate tissue is removed piece by piece.
  • Transurethral Incision of the Prostate (TUIP): Small incisions are made in the prostate gland and bladder neck to widen the urethra.
  • Laser Surgery: Uses various types of lasers (e.g., HoLEP, PVP, GreenLight) to vaporize or remove obstructive prostate tissue.
  • Open Prostatectomy (Simple Prostatectomy): For very large prostates, involves an incision in the abdomen to remove the inner part of the prostate.

Living With an Enlarged Prostate

Most men with an enlarged prostate never need a procedure, and the ones who do are usually identifiable early. What decides the path is how much the symptoms bother you, which medications you are already taking, and a few complications that change the calculation.

The symptom score decides the treatment, not the prostate size

A short questionnaire rating frequency, urgency, weak stream, and night waking sorts symptoms into mild, moderate, and severe, and mild symptoms that do not bother you are simply watched. Night urination deserves a second look before it is blamed on the prostate: producing too much urine overnight from evening fluid, a diuretic taken late, untreated sleep apnea, or an overactive bladder is at least as common a cause, and prostate medication will not fix it.

Alpha-blockers work in days; shrinking the gland takes months

Tamsulosin relaxes the muscle at the bladder outlet and improves flow within a week. Its trade-offs are dizziness on standing and reduced ejaculation, and it must be mentioned to any eye surgeon before cataract surgery. Finasteride and dutasteride shrink the prostate by about a quarter over six to twelve months and reduce the chance of retention and surgery, which makes them the choice for larger glands; they also halve the PSA reading, so the measured value is doubled when interpreting it. Daily tadalafil treats urinary symptoms and erectile dysfunction together.

Medications that quietly make it worse

Decongestants containing pseudoephedrine or phenylephrine, sedating antihistamines, some antidepressants, and bladder-relaxing drugs prescribed for other reasons all tighten the outlet or weaken the bladder. A cold remedy is the most common trigger for a sudden inability to pass urine, which is an emergency requiring a catheter the same day.

PSA, BPH, and cancer

An enlarged prostate raises PSA in proportion to its size and does not cause prostate cancer, but the two coexist often enough that a rising PSA or an abnormal exam is evaluated on its own merits. Screening between 55 and 69 is a shared decision rather than a routine test. Our prostatitis, BPH, and prostate cancer article explains how the three are told apart, and the prostatitis page covers the painful, often younger-onset condition that mimics BPH.

When complications change the plan

Repeated urinary infections, bladder stones, blood in the urine from the enlarged gland, a large volume left in the bladder after voiding, or any effect on the kidneys moves the discussion toward a procedure regardless of symptom score. Newer office-based options such as the prostatic urethral lift and water vapor treatment preserve ejaculation and suit men who want to avoid both long-term medication and surgery. Our genitourinary team manages medication and referral. The NIDDK and MedlinePlus publish patient guidance on every stage.

If you are waking more than twice a night to urinate or your stream has weakened, schedule a visit; the evaluation is simple and the options are wider than they used to be.