Enlarged Prostate Symptoms: What They Feel Like and When to See a Doctor

What are the classic symptoms of an enlarged prostate?

The prostate sits just below the bladder and wraps around the urethra — the tube that carries urine out of the body. When the prostate enlarges, it can squeeze the urethra and make urination harder.

Clinicians group the symptoms into two categories 1Ref 1Lerner LB, McVary KT, Barry MJ, et al. (2021).Management of Lower Urinary Tract Symptoms Attributed to Benign Prostatic Hyperplasia: AUA Guideline Part I — Initial Work-up and Medical Management.Classification of BPH symptoms (obstructive and irritative), IPSS severity grading, treatment options (lifestyle, alpha-blockers, 5-alpha reductase inhibitors, procedures), and complications of untreated BPH:

Obstructive (voiding) symptoms: - Weak or slow urine stream - Hesitancy — needing to wait before the stream begins - Stream that stops and starts - Feeling of incomplete bladder emptying - Straining or pushing to urinate

Irritative (storage) symptoms: - Urinating more than eight times a day - Urgency — a sudden strong urge that is hard to delay - Nocturia — waking two or more times per night to urinate - Urge incontinence — leaking urine before reaching the toilet

Most men with BPH have a mixture of both types. The American Urological Association uses a validated questionnaire (the International Prostate Symptom Score, or IPSS) to grade severity — mild, moderate, or severe — which guides treatment decisions 1Ref 1Lerner LB, McVary KT, Barry MJ, et al. (2021).Management of Lower Urinary Tract Symptoms Attributed to Benign Prostatic Hyperplasia: AUA Guideline Part I — Initial Work-up and Medical Management.Classification of BPH symptoms (obstructive and irritative), IPSS severity grading, treatment options (lifestyle, alpha-blockers, 5-alpha reductase inhibitors, procedures), and complications of untreated BPH.

Why does the prostate enlarge?

The prostate grows throughout a man's life — a slow second growth phase begins in the mid-thirties and continues gradually with age. The exact drivers are not fully understood, but hormonal changes related to aging — particularly shifts in the balance of androgens and estrogens — play a role. Genetics also matters: a father or brother with significant BPH increases personal likelihood.

Importantly, BPH is a benign (non-cancerous) process. BPH itself does not cause prostate cancer and does not make it more or less likely. However, the two conditions can coexist, and prostate cancer can cause some of the same urinary symptoms — which is why evaluation matters 1Ref 1Lerner LB, McVary KT, Barry MJ, et al. (2021).Management of Lower Urinary Tract Symptoms Attributed to Benign Prostatic Hyperplasia: AUA Guideline Part I — Initial Work-up and Medical Management.Classification of BPH symptoms (obstructive and irritative), IPSS severity grading, treatment options (lifestyle, alpha-blockers, 5-alpha reductase inhibitors, procedures), and complications of untreated BPH.

What else can cause the same urinary symptoms?

Urinary symptoms in men should not be assumed to be BPH without evaluation. Several other conditions look identical:

Urinary tract infection (UTI). Less common in men than women but possible, especially over 50 — often causes burning with urination and urgency. A urine test distinguishes it quickly.

Prostatitis. Inflammation or infection of the prostate itself. Acute prostatitis comes on suddenly with fever, pelvic pain, and urinary symptoms. Chronic prostatitis is subtler but can cause ongoing urinary difficulty and pelvic discomfort.

Prostate cancer. Localized prostate cancer is often asymptomatic, but as it advances it can cause urinary symptoms similar to BPH. This is one of the main reasons urinary symptoms in older men warrant evaluation rather than assumption 2Ref 2Wei JT, Barocas D, Carlsson S, et al. (2023).Early Detection of Prostate Cancer: AUA/SUO Guideline Part I: Prostate Cancer Screening.PSA testing in the evaluation of urinary symptoms in older men, including shared decision-making and higher-risk populations (Black men, family history)3Ref 3US Preventive Services Task Force (2018).Screening for Prostate Cancer: US Preventive Services Task Force Recommendation Statement.Shared decision-making framework for PSA screening, particularly the different considerations for men over 70 and varying risk groups.

Bladder conditions. Overactive bladder, bladder stones, and bladder cancer can all cause urgency and frequency.

Medications. Antihistamines, decongestants (especially pseudoephedrine), certain antidepressants, and some blood pressure medications can worsen urinary retention or mimic BPH symptoms.

Neurological conditions. Diabetes, Parkinson's disease, and prior stroke can each affect bladder control.

What complications can untreated BPH cause?

Mild symptoms that are not bothersome can be safely monitored over time. If left unaddressed, however:

• Acute urinary retention — the bladder cannot empty at all — is a medical emergency requiring a catheter. It causes severe pain and the complete inability to urinate despite a full bladder.
• Bladder damage — chronically straining to urinate can weaken bladder muscle or create pouches in the bladder wall.
• Kidney damage — severe longstanding obstruction can push pressure back into the kidneys.
• Bladder stones — incomplete emptying promotes stone formation.
• Urinary tract infections — retained urine is a breeding ground for bacteria.

These complications are less common when symptoms are caught and treated early 1Ref 1Lerner LB, McVary KT, Barry MJ, et al. (2021).Management of Lower Urinary Tract Symptoms Attributed to Benign Prostatic Hyperplasia: AUA Guideline Part I — Initial Work-up and Medical Management.Classification of BPH symptoms (obstructive and irritative), IPSS severity grading, treatment options (lifestyle, alpha-blockers, 5-alpha reductase inhibitors, procedures), and complications of untreated BPH.

What does treatment for BPH look like?

Treatment is matched to symptom severity, prostate size, and overall health. Options range from watchful waiting to medications to procedures 1Ref 1Lerner LB, McVary KT, Barry MJ, et al. (2021).Management of Lower Urinary Tract Symptoms Attributed to Benign Prostatic Hyperplasia: AUA Guideline Part I — Initial Work-up and Medical Management.Classification of BPH symptoms (obstructive and irritative), IPSS severity grading, treatment options (lifestyle, alpha-blockers, 5-alpha reductase inhibitors, procedures), and complications of untreated BPH:

Lifestyle changes are often the starting point for mild symptoms: limiting fluids in the evening, reducing caffeine and alcohol, and double voiding (waiting a moment after finishing to try again) can meaningfully reduce symptoms.

Medications include two main classes: alpha-blockers, which relax the smooth muscle around the urethra and improve urine flow relatively quickly; and 5-alpha reductase inhibitors, which reduce prostate size over months and work better for larger prostates. Some men take both.

Minimally invasive procedures and surgery are options for men with severe obstruction or when medications have not helped enough. These are typically considered after medications have been tried.

For most men, BPH is manageable and quality of life improves substantially with appropriate treatment.

Should you get a PSA test?

A PSA (prostate-specific antigen) blood test is often part of the evaluation for urinary symptoms in older men, because elevated PSA can indicate BPH, prostatitis, or prostate cancer. Screening involves a shared decision-making conversation about the benefits and limitations of the test — particularly for men over 70, where the calculus differs 2Ref 2Wei JT, Barocas D, Carlsson S, et al. (2023).Early Detection of Prostate Cancer: AUA/SUO Guideline Part I: Prostate Cancer Screening.PSA testing in the evaluation of urinary symptoms in older men, including shared decision-making and higher-risk populations (Black men, family history)3Ref 3US Preventive Services Task Force (2018).Screening for Prostate Cancer: US Preventive Services Task Force Recommendation Statement.Shared decision-making framework for PSA screening, particularly the different considerations for men over 70 and varying risk groups. Your clinician can discuss whether PSA testing is appropriate for your age and risk factors, including family history and ancestry (Black men have higher prostate cancer rates and often develop it at younger ages).