Prostate Enlargement: IPSS Self-Test, Medicines and Side Effects in Plain Language

At a glance

What is it? A benign enlargement of the prostate that obstructs the flow of urine. Not cancer.
Who does it affect? Very common in men from about 50, increasing with age.
Key symptom Problems passing urine: a weak stream, frequent and night-time urge.
Self-test The IPSS questionnaire grades the severity (mild, moderate, severe).
Treatment Watchful waiting, medicines (alpha-blockers, 5-ARI) or surgery.
ICD-10 N40 (prostatic hyperplasia)

What is prostate enlargement?

The prostate is an organ about the size of a chestnut that surrounds the urethra directly below the bladder. From about the age of 40 to 50, it slowly continues to grow in many men. When the enlarged tissue presses on the urethra, urine can flow less easily, and problems with passing urine arise.

In medical terms this is called benign prostatic syndrome (BPS) or benign prostate enlargement. Important: benign means that it is not prostate cancer. The enlargement is very common and is part of normal ageing. It can be treated well.

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Symptoms

The symptoms arise because the enlarged prostate obstructs the flow of urine and the bladder can be irritated. Typical ones are:

  • a weak urinary stream and the feeling of not fully emptying the bladder.
  • a frequent urge to urinate, including at night, so that you have to get up several times. More on this: Urge to urinate.
  • difficulty getting the flow of urine started, or an interrupted stream.
  • a sudden urge to urinate that is hard to postpone.
  • dribbling after passing urine.

How strong the symptoms are can be graded with a simple self-test, the IPSS in the next section.

The IPSS self-test

The IPSS (International Prostate Symptom Score) is a recognised questionnaire with which you can assess the severity of your symptoms yourself. Answer each of the seven questions with a score from 0 (never) to 5 (almost always), relating to the past month, and add up the points at the end.

In the past month, how often did you have ...

  1. the feeling that your bladder was not fully empty after passing urine?
  2. to pass urine again within two hours?
  3. to stop and start several times while passing urine (an interrupted stream)?
  4. difficulty postponing passing urine?
  5. a weak urinary stream?
  6. to strain to begin passing urine?
  7. to get up at night to pass urine? (here the number counts: 0 = none to 5 = five times or more)
How to read your result Add up the points from all seven questions (0 to 35): 0 to 7 points mean mild symptoms, 8 to 19 points moderate symptoms and 20 to 35 points severe symptoms. An eighth question additionally captures how you would feel if your current symptoms stayed the way they are (quality of life).

The test does not replace a diagnosis, but it helps you and your doctor to grade the symptoms and to follow the course over time.

Causes and risk factors

Why the prostate grows is not fully understood. Age and the sex hormones play a central role, above all the interplay of testosterone and its breakdown product DHT, which stimulates prostate growth. Further factors that are discussed:

  • a family predisposition.
  • excess weight, lack of exercise and the metabolic syndrome.

The enlargement itself is therefore not a sign of an unhealthy lifestyle, but first and foremost a question of age and hormones.

Diagnosis: how is it determined?

The work-up usually includes:

  • a conversation about the symptoms, often using the IPSS questionnaire.
  • a digital examination of the prostate through the rectum.
  • a urine and blood test, plus the PSA value.
  • an ultrasound of the bladder and prostate, often with measurement of the residual urine (what remains in the bladder after passing urine) and the strength of the stream (uroflowmetry).

These examinations also clarify whether other causes such as a urinary tract infection or, rarely, prostate cancer are behind the symptoms.

Treatment: from watchful waiting to surgery

Not every prostate enlargement has to be treated straight away. How to proceed depends on the level of distress, the size of the prostate and possible complications.

  • Watchful waiting: with mild symptoms, regular check-ups and simple measures are often enough: drink less in the evening, empty the bladder calmly and completely, limit caffeine and alcohol.
  • Herbal preparations: products based for example on sitosterol or pumpkin seed can ease mild symptoms somewhat.
  • Medicines: with stronger symptoms, above all alpha-blockers and 5-alpha-reductase inhibitors are used (see next section).
  • Surgery: if medicines do not help sufficiently or complications occur, a procedure that removes or reduces excess prostate tissue can be useful (for example a TURP or a laser procedure).

Tamsulosin or finasteride? The medicines compared

Among the medicines there are two important groups that work in quite different ways. Tamsulosin stands for the alpha-blockers, finasteride for the 5-alpha-reductase inhibitors. They can also be combined.

Alpha-blocker (e.g. tamsulosin) 5-alpha-reductase inhibitor (e.g. finasteride)
How it works relaxes the muscle at the bladder neck and prostate, urine flows more easily shrinks the enlarged prostate over time
Especially for whom when rapid relief is wanted, at any prostate size rather with a clearly enlarged prostate
How fast often noticeable within days slow, usually only after several months
Progression / surgery risk eases symptoms but does not lower urinary retention or surgery risk can slow progression and lower urinary retention and surgery risk
Typical side effects dizziness, headache, blocked or runny nose, drop in blood pressure; often a "dry" ejaculation possible sexual side effects (less desire, erection and ejaculation problems); rarely a low mood; lowers the PSA value

Scroll the table sideways →

Plain talk about the side effects, because many questions stay open here:

  • Dry orgasm with tamsulosin: many men are startled when little or no semen comes at climax. This is the so-called retrograde or absent ejaculation. It is harmless, desire and the ability to have an erection usually stay intact, and after stopping the medicine the effect usually disappears again.
  • Sexual side effects with finasteride: in some men, desire can decrease or erection problems can occur. Low moods are occasionally reported. If such changes bother you, speak openly with your doctor.
  • PSA value: finasteride halves the PSA value in the blood. This is important for the early detection of prostate cancer. So at screening, always say that you take finasteride, so that the value is interpreted correctly.
  • Combination: with a clearly enlarged prostate and stronger symptoms, both substances can be combined to bring together their advantages.
Medication plan

Document the effect and side effects cleanly.

Whether tamsulosin, finasteride or both: brite reminds you of the daily intake, helps you record symptoms and side effects, and checks for interactions with your other medicines. That makes your next appointment concrete.

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When to see a doctor

Make an appointment when problems with passing urine bother you, when your sleep suffers from the night-time urge or when the symptoms get worse. It is also useful for interpreting the PSA value and ruling out other causes.

Acute urinary retention: act at once When you suddenly cannot pass any urine at all, even though the bladder is full and presses painfully, this is acute urinary retention and an emergency. Go to the emergency department at once or call the emergency number (112, in the US: 911). The bladder then has to be relieved quickly.

Stay on top of your prostate medicines with brite

Medicines for prostate enlargement work best when they are taken regularly. brite helps you with this and keeps an eye on symptoms and side effects.

  • Intake reminders: for the daily tablet, so that no dose is forgotten.
  • Symptom diary: record how the symptoms and possible side effects develop.
  • Interaction check: see at a glance whether your medicines work well together.
  • Medication plan: always up to date, including the note about finasteride for the PSA conversation.
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Frequently asked questions

No. Benign prostate enlargement (BPS) is not cancer and does not turn into cancer. Both can however occur at the same time, which is why the work-up belongs in medical hands.

A recognised questionnaire with seven questions that grades the severity of the symptoms. Up to 7 points counts as mild, 8 to 19 as moderate and 20 to 35 as severe.

It depends on the situation. Tamsulosin (an alpha-blocker) eases the symptoms quickly but does not shrink the prostate. Finasteride slowly shrinks an enlarged prostate and can slow progression. With a large prostate they are sometimes combined.

This is a so-called dry or retrograde ejaculation. It is harmless, desire and erection usually stay intact, and the effect usually disappears again after stopping the medicine.

In some men, finasteride can affect desire or erection, and low moods are occasionally reported. If such changes bother you, speak with your doctor about alternatives.

Yes. Finasteride halves the PSA value in the blood. So at screening, always say that you take it, so that the value is assessed correctly.

With mild symptoms, herbal preparations (for example with sitosterol) can ease the symptoms somewhat. With stronger symptoms they are usually not enough.

When you suddenly cannot pass any urine at all and the bladder presses painfully (acute urinary retention). Then go to the emergency department at once or call the emergency number.

Related topics

Quellen

  1. DGU (Deutsche Gesellschaft für Urologie): S2e-Leitlinie „Diagnostik und Therapie des Benignen Prostatasyndroms (BPS)“ (Langversion 5.0, 2023, AWMF 043-034). register.awmf.org/de/leitlinien/detail/043-034
  2. EAU (European Association of Urology): Guidelines on the Management of Non-Neurogenic Male LUTS. uroweb.org
  3. IQWiG / gesundheitsinformation.de: Gutartige Prostatavergrößerung. gesundheitsinformation.de
  4. DGU / urologenportal.de: Patienteninformationen zur Prostata. urologenportal.de
  5. Barry MJ et al.: The American Urological Association Symptom Index (IPSS). auanet.org
Important note: This article is for general information and does not replace medical advice, diagnosis or treatment. The IPSS is a self-test for orientation, not a diagnosis. Which treatment is right for you depends on your individual situation and belongs in medical (urological) hands. Last updated: June 2026.