What are the symptoms of prostate cancer?

Short answer: Early prostate cancer usually has no symptoms at all — it's most often caught by a rising PSA blood test. When symptoms do appear, they include trouble starting or stopping urination, a weak or interrupted stream, needing to urinate often (especially at night), blood in the urine or semen, pain or burning with urination, erectile changes, and — in more advanced disease — new hip, lower-back, or pelvic pain. Any of these in a man over 50 (or over 40 with a family history) is a same-week doctor visit. Details below.

Prostate cancer is the second most common cancer in American men, and one of the most survivable when caught early — a five-year survival above 99% when it's still confined to the prostate. The catch is that early prostate cancer almost never causes symptoms, and the urinary symptoms that do show up look exactly like benign prostate enlargement (BPH), which affects most men over 60. This guide walks through what the symptoms actually are, which ones deserve a call today, and what screening looks like.

The most common symptoms — in plain language

Not everyone has all of these, and having one doesn't mean you have cancer. Most urinary changes in older men are benign — but these are the signs urologists and oncologists ask about first.

• Trouble starting to urinate, or a delay before the stream begins.
• A weak, slow, or interrupted urine stream.
• Needing to urinate more often, especially at night (nocturia).
• A sudden, urgent need to urinate.
• A feeling that your bladder doesn't fully empty.
• Dribbling after you finish.
• Blood in the urine or semen.
• Pain or burning during urination or ejaculation.
• Erectile changes — new difficulty getting or keeping an erection.
• Ongoing pain in the hips, lower back, pelvis, or upper thighs (usually a later sign — can mean spread to bone).
• Unexplained weight loss or fatigue (later sign).

Takeaway: urinary symptoms in older men are usually BPH, not cancer. But the only way to know is a PSA test and an exam.

Which symptoms need a doctor call today

• Blood in the urine or semen — even once.
• New bone pain in the hips, lower back, or pelvis without a clear injury.
• A sudden change in urinary flow in a man over 50.
• Unexplained weight loss.
• Erectile changes paired with urinary symptoms.

The next step is usually a call to your primary care doctor for a PSA blood test and a digital rectal exam (DRE). If either is abnormal, a urologist may recommend an MRI and, if warranted, a targeted biopsy.

Takeaway: blood in the urine or semen and new unexplained bone pain are the two findings doctors take most seriously.

Symptoms by stage

• Localized (stage I to II): almost always silent. Found by a rising PSA or an abnormal DRE.
• Locally advanced (stage III): urinary symptoms, occasional blood in semen, pelvic discomfort.
• Metastatic (stage IV): bone pain (hips, back, pelvis), fatigue, weight loss, anemia, sometimes swelling in the legs.

Takeaway: by the time prostate cancer causes symptoms on its own, it's often locally advanced or metastatic. PSA screening is the only reliable way to catch it early.

Who is at higher risk

• Age 50 and older — the average age at diagnosis is 67.
• Black men — nearly twice the risk and more likely to be diagnosed at younger ages and later stages.
• A family history, especially a father or brother diagnosed before 65.
• BRCA1 or BRCA2 mutations, or Lynch syndrome.
• A diet high in processed meat and low in vegetables; obesity.

Takeaway: if you're Black, or have a first-degree relative diagnosed young, start the PSA conversation at 40 to 45 — not 55.

What screening actually looks like

• PSA blood test (prostate-specific antigen) — the primary screening tool. Frequency depends on age, PSA level, and risk. A rising PSA over time matters more than any single number.
• Digital rectal exam (DRE) — feels for lumps or hard areas. Less sensitive than PSA but still used.
• MRI of the prostate — added when PSA is elevated, to decide whether biopsy is needed and to target it.
• Prostate biopsy — the only way to confirm diagnosis, usually done under MRI guidance.

Not every rising PSA is cancer, and not every prostate cancer needs treatment — many low-risk cancers are safely watched with active surveillance. Screening decisions are a conversation, not a checkbox.

Takeaway: the trend of your PSA over years matters more than any single reading. Get a baseline in your 40s if you're higher risk.

What to do if you have symptoms

1. Write down what you've noticed — when urinary changes started, any blood, any bone pain, any change in erections.
2. Call your primary care doctor for an appointment this month. Ask for a PSA test and a DRE.
3. If your PSA is elevated, ask for a prostate MRI before a biopsy — MRI-guided biopsy is more accurate and misses fewer significant cancers.
4. Ask about your options if diagnosed — active surveillance, surgery, radiation, and focal therapies each have different trade-offs on cancer control, urinary function, and sexual function.
5. Bring someone with you to the follow-up. Two people hear more than one.

If you're diagnosed, our guide to what to do in the first 72 hours after a cancer diagnosis walks through the exact order of steps. And if your first appointment left you with a report full of words you don't understand, how to read a pathology report you don't understand is a plain-language walkthrough.

Takeaway: most urinary symptoms in older men are benign, and many prostate cancers grow slowly enough to watch rather than treat. But it takes a PSA, a DRE, and sometimes an MRI to know which category you're in.

Related reading

• Just diagnosed with cancer: what to do first — the first 72 hours, in order.
• How to read a pathology report you don't understand — a plain-language walkthrough.
• Questions to ask after any new diagnosis — the full framework for the first real appointment.

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This post is for general informational purposes and isn't a substitute for guidance from your care team. If you have symptoms that concern you, call your doctor.