Prostate Symptoms: Warning Signs of Prostate Cancer

Q: At what age should I start PSA screening?

The AUA/SUO 2023 guideline says a baseline PSA may be offered between 45 and 50, with regular screening every 2 to 4 years from 50 to 69. Men at higher risk, including Black men, men with a strong family history, and carriers of mutations such as BRCA2, should be offered screening starting at 40 to 45. The USPSTF advises individual decisions from 55 to 69.

September is Prostate Cancer Awareness Month, and every year it brings a wave of articles listing "warning signs" of prostate cancer. The most useful thing a urologist can tell you is less comfortable: early prostate cancer usually causes no symptoms at all. The American Cancer Society states this plainly on its signs and symptoms page. Waiting for symptoms is the wrong strategy. Most of the urinary symptoms men worry about come from benign conditions, and the cancers that matter most are usually found by a blood test before a man feels anything. Here is how to read your symptoms, and what actually finds prostate cancer early.

How common prostate cancer is

Prostate cancer is the most frequently diagnosed cancer in American men after skin cancer. The American Cancer Society estimates about 333,830 new cases and about 36,320 deaths in the United States in 2026, and that about 1 in 8 men will be diagnosed during their lifetime while about 1 in 44 will die of it (ACS Key Statistics). It accounts for 15.8% of all new cancer cases, and the median age at diagnosis is 68 (NCI SEER Cancer Stat Facts).

Those numbers carry good news too. According to SEER, 69.5% of prostate cancers are diagnosed while still confined to the prostate, and the five-year relative survival for localized disease is essentially 100%. Once cancer has spread to distant sites, five-year relative survival falls to 40.1% (SEER). The entire point of early detection is to find the disease on the first side of that divide.

Why early prostate cancer is silent

The prostate sits beneath the bladder and wraps around the urethra, the channel that carries urine and semen out of the body (ACS). It is divided into zones. The peripheral zone, the outer rim of the gland toward the rectum, is the most common site for prostate cancer to develop (Holland-Frei Cancer Medicine, NCBI Bookshelf). A review in BMC Medicine puts it at about 70% of cancers, and notes that the urinary symptoms of benign enlargement come from growth of the transition and central zones, the tissue immediately around the urethra (BMC Medicine, 2022).

In practical terms: a small cancer in the outer gland does not squeeze the urethra, so it does not change how you urinate. By the time a tumor is large enough to cause urinary obstruction or pain, it is often no longer early. The same BMC Medicine review summarized screening-trial data from Gothenburg and the UK ProtecT study showing no association, or even an inverse association, between the severity of urinary symptoms and the chance of finding cancer on biopsy (BMC Medicine, 2022). Bad urinary symptoms do not mean cancer, and good urinary function does not mean you are cancer-free.

The prostate symptoms men actually notice, and what they usually mean

Urinary symptoms: usually BPH

A weak or interrupted stream, trouble starting, getting up at night to urinate, urgency, frequency and the sense that the bladder never fully empties are classic symptoms of benign prostatic hyperplasia (BPH), noncancerous enlargement of the gland. The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) reports that BPH affects 5% to 6% of men ages 40 to 64 and 29% to 33% of men 65 and older, and notes that symptom severity does not necessarily track with prostate size (NIDDK: BPH). The American Cancer Society likewise states that trouble urinating is much more often caused by BPH than by cancer (ACS). BPH is not cancer, but it deserves treatment when it bothers you, and it can mask or coexist with cancer, which is why a man with new urinary symptoms should still be evaluated.

Pain, burning and pelvic discomfort: often prostatitis

Prostatitis is inflammation of the prostate, and it is the most common urinary tract problem in men younger than 50 (NIDDK: Prostatitis). NIDDK describes four types. Chronic prostatitis/chronic pelvic pain syndrome, the most common form, affects 10% to 15% of U.S. men and causes pain in the pelvis, perineum or genitals, sometimes with painful ejaculation. Acute bacterial prostatitis comes on suddenly with fever, chills and burning or painful urination and needs prompt antibiotic treatment. Where BPH tends to cause obstruction without pain, prostatitis is defined by pain or infection, and it tends to affect younger men.

Symptoms that do raise concern for cancer

The American Cancer Society lists blood in the urine or semen as possible symptoms, and trouble with erections, bone pain (especially hips, spine or ribs), weakness or numbness in the legs from spinal cord compression, unexplained weight loss and fatigue as symptoms of more advanced disease (ACS). Each of these has more common benign explanations, but none should be dismissed without an exam and a PSA test.

Blood in the urine is never considered normal. It requires evaluation of the kidneys and bladder as well as the prostate, because bladder and kidney cancers can present this way.
Blood in the semen is most often from benign inflammation, particularly in younger men, but in a man over 40 or one with persistent or recurrent episodes it warrants a PSA and exam.
New erectile dysfunction is far more often vascular, hormonal or medication-related, but it is a reason to see a doctor, and a PSA can be checked at the same visit.
Persistent bone pain, unexplained weight loss, or new leg weakness in an older man should prompt urgent evaluation. These are the symptoms of cancer that has already spread.

Red flags that need prompt evaluation

Call a urologist promptly, or go to an emergency department, for any of the following:

Inability to urinate, or a painful, distended bladder
Fever and chills with painful or burning urination
Visible blood in the urine, especially with clots
New back or bone pain with leg weakness, numbness, or loss of bladder or bowel control
Unexplained weight loss or fatigue together with any urinary change

How early prostate cancer is actually found: PSA screening

Because early disease is silent, it is found by testing men who feel fine. The first test is a blood test for prostate-specific antigen (PSA). The AUA/SUO 2023 guideline on early detection states that clinicians should use PSA as the first screening test, and that screening should begin with shared decision-making, a real conversation about benefits and harms (AUA/SUO Early Detection Guideline, 2023).

What the guidelines say

Dr. Shusterman recommends starting PSA screening at age 50 for most men, and earlier, typically at 40 to 45, for men at higher risk: Black men, men whose father or brother had prostate cancer, and BRCA carriers. From age 70 on, whether to continue screening is an individual decision made after discussing benefits and harms. The U.S. Preventive Services Task Force (USPSTF) takes a narrower view, and it notes that an update to its recommendation is in progress.

The AUA/SUO guideline, written by urologists and more recent, is more specific (AUA/SUO 2023):

Most men should start PSA screening at age 50, and men at higher risk at 40 to 45.
Clinicians should offer screening beginning at age 40 to 45 for people at increased risk: Black ancestry, a germline mutation that raises risk (the guideline names BRCA2 and mismatch-repair genes), or a strong family history of prostate cancer.
Clinicians should offer regular screening every 2 to 4 years from 50 to 69.
The interval can be personalized, and screening can be stopped, based on preference, age, PSA level, risk, life expectancy and general health.
A digital rectal exam may be used alongside PSA to assess risk.

The honest trade-offs

PSA is imperfect. There is no single cutoff that separates normal from abnormal, and BPH and prostatitis can both raise PSA (NCI PSA Fact Sheet). The American Cancer Society notes that most men without prostate cancer have a PSA under 4 ng/mL; a PSA between 4 and 10 carries about a 1 in 4 chance of cancer, and above 10, the chance is over 50% (ACS). Ejaculation, cycling, recent urologic procedures and age can raise PSA, and finasteride or dutasteride can lower it, which your urologist must account for. The USPSTF reports that more than 15% of men in a major trial had at least one false-positive result over about 10 years, that 20% to 50% of screen-detected cancers may be overdiagnosed, and that about 1% of biopsies lead to hospitalization (USPSTF). Modern practice is built to reduce those harms.

What happens after an elevated PSA today

An abnormal PSA no longer leads automatically to a biopsy. The AUA/SUO 2023 pathway (AUA/SUO 2023) looks like this:

Repeat the PSA. For a newly elevated PSA, the guideline says to repeat the test before moving on to biomarkers, imaging or biopsy. Many elevations settle on their own.
Consider a secondary biomarker. Blood or urine tests may be used when the result would change the biopsy decision. NCI lists examples such as the Prostate Health Index, 4Kscore, IsoPSA, PCA3 and SelectMDx (NCI).
Get an MRI before biopsy. Multiparametric MRI, read with the PI-RADS scoring system, may be used before a first biopsy to improve detection of clinically significant (Grade Group 2 or higher) cancer.
Targeted biopsy. If MRI shows a suspicious lesion, clinicians should biopsy that lesion directly. If MRI is clear but risk remains elevated, a systematic biopsy is still recommended. Biopsy can be done through the rectum or through the perineum.

This sequence spares many men an unnecessary biopsy and focuses detection on the cancers that need treatment rather than those that can simply be monitored.

Who is at higher risk

Age. Prostate cancer is rare before 40, and risk rises rapidly after 50; about 6 in 10 cases are diagnosed at 65 or older (ACS Risk Factors).
Race. Black men are more likely to develop prostate cancer, to develop it at a younger age, and to die from it (CDC).
Family history. Having a father or brother with prostate cancer more than doubles a man's risk, and risk climbs further with several affected relatives or relatives diagnosed young (ACS).
Inherited gene changes. Mutations in BRCA2 in particular, and BRCA1, as well as Lynch syndrome, raise risk (ACS). A family history of breast, ovarian or pancreatic cancer is worth mentioning to your urologist for this reason.

If any of these apply to you, the AUA/SUO guideline supports starting the screening conversation at 40 to 45 rather than waiting.

Get a PSA and prostate evaluation in Manhattan or Queens

If you have urinary symptoms, one of the red flags above, or simply have not had a PSA and fall into a screening age or risk group, the right next step is a focused visit, not an internet search. Dr. David Shusterman, a board-certified urologist, evaluates prostate symptoms and PSA results at 1Prostate's offices at 800 Second Avenue, 9th Floor, in Midtown Manhattan and 69-15 Yellowstone Blvd in Forest Hills, Queens. Call (212) 991-9991 to schedule.

Frequently asked questions

What are the first signs of prostate cancer?

Usually there are none. Early prostate cancer most often begins in the outer peripheral zone of the gland, away from the urethra, so it rarely changes urination. When symptoms do appear, such as blood in the urine or semen, bone pain, or weight loss, the disease may be more advanced. That is why PSA screening, not symptoms, is how most early cancers are found.

Do frequent urination and a weak stream mean I have prostate cancer?

Usually not. These are classic symptoms of benign prostatic hyperplasia, which affects roughly a third of men 65 and older. Screening trials have found no link between how bad urinary symptoms are and the chance of finding cancer. Still, new urinary symptoms deserve an exam and a PSA test, because BPH and cancer can coexist and your urologist can treat the symptoms either way.

How is prostatitis different from BPH?

Prostatitis is inflammation of the prostate and is the most common urinary problem in men under 50. It typically causes pelvic, perineal or genital pain, painful ejaculation, or, in bacterial cases, fever, chills and burning urination. BPH is noncancerous enlargement in older men that causes a weak stream, frequency and nighttime urination, usually without pain. Both can raise PSA temporarily.

At what age should I start PSA screening?

Dr. Shusterman recommends PSA screening starting at age 50 for most men, repeated at regular intervals. Men at higher risk, including Black men, men whose father or brother had prostate cancer, and BRCA carriers, should start earlier, typically at 40 to 45. From age 70 on, screening is an individual decision.

My PSA is high. Do I need a biopsy right away?

Not necessarily. Current AUA/SUO guidance is to repeat the PSA first, since infection, inflammation, ejaculation or BPH can raise it. If it stays elevated, a blood or urine biomarker and a prostate MRI can help decide whether a biopsy is needed. If the MRI shows a suspicious area, a targeted biopsy of that spot is recommended.

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Prostate Cancer Awareness Month: Symptoms to Watch For

How common prostate cancer is

Why early prostate cancer is silent