Early prostate cancer often causes no symptoms at all
Most men with early prostate cancer feel nothing. The cancer grows silently in the prostate gland, which sits below the bladder and wraps around the urethra—the tube that carries urine out of the body. Because the prostate is deep inside, a small tumor may not press on anything or interfere with how your body works. This is why prostate cancer is often found by screening (a PSA blood test or digital rectal exam) rather than because a man noticed something wrong.
When symptoms do appear, they usually mean the cancer has grown large enough to press on the urethra or bladder, or has spread beyond the prostate. This can take years. Some men never develop symptoms, even with cancer present—they may die of something else first.
Key Takeaways
- Early prostate cancer typically causes no symptoms; most cases are found through screening rather than because a man felt something wrong.
- When symptoms appear, they usually involve urination—difficulty starting or stopping, weak stream, or needing to urinate more often, especially at night.
- Symptoms like these can also come from benign prostate enlargement, urinary tract infections, or other conditions, so they do not automatically mean cancer.
- Pain in the lower back, hips, or pelvis can signal that cancer has spread to the bones, which is a more advanced stage.
- A doctor can determine what is causing symptoms through blood tests, imaging, and sometimes a biopsy.
Changes in urination are the most common early symptom
If prostate cancer grows large enough to affect the urethra, men often notice changes in how they urinate. These include difficulty starting to urinate, a weak or interrupted urine stream, needing to strain to empty the bladder, or taking longer than usual to finish. Some men describe the stream as thinner or less forceful than before.
Needing to urinate more often—especially waking multiple times at night to urinate—is another common change. This happens because an enlarged prostate (whether from cancer or benign growth) presses on the bladder and reduces how much urine it can hold. A man may feel the urge to go even when only a small amount is present.
It is important to know that these same symptoms occur with benign prostate hyperplasia (BPH), a non-cancerous enlargement that is extremely common in older men. They also happen with urinary tract infections, bladder problems, and other conditions. Urination changes do not mean cancer is present—they mean something is affecting the prostate or urinary system and a doctor should investigate.
Pain or discomfort in specific areas may indicate advanced cancer
Pain is not typical of early prostate cancer. When pain does occur, it usually signals that cancer has spread beyond the prostate to nearby structures or bones. Men may feel aching or pain in the lower back, hips, pelvis, or upper thighs. The pain may be constant or come and go, and it may worsen with sitting or improve with standing.
Pain during ejaculation or blood in semen or urine can also occur, though these are less common. If cancer has spread to the bones, pain may be sharp and localized to one spot, or it may feel like a dull ache across a larger area. Bone pain from cancer often does not improve with rest and may wake a man at night.
Again, pain in these areas can come from many causes—arthritis, muscle strain, kidney stones, or other conditions. But persistent pain in the lower back or pelvis that does not improve with time warrants a medical evaluation.
Erectile dysfunction and other sexual changes
Some men with prostate cancer notice difficulty achieving or maintaining an erection. This can happen because the cancer or its growth affects blood vessels or nerves involved in erection, or because of the psychological stress of a cancer diagnosis. Erectile dysfunction is also extremely common in older men for many other reasons—heart disease, diabetes, high blood pressure, and certain medications all contribute.
Changes in sexual function alone do not suggest cancer is present. But if erectile dysfunction is new and accompanied by other urinary symptoms, a doctor should evaluate both together.
Fatigue and weight loss in advanced disease
Men with advanced prostate cancer may feel unusually tired or notice they are losing weight without trying. These are general signs that the body is dealing with a serious illness. Fatigue can come from the cancer itself, from the body's immune response to it, or from treatments like radiation or hormone therapy. Weight loss happens when cancer uses the body's energy or when a man loses appetite.
These symptoms are not specific to prostate cancer—they occur with many cancers and other serious conditions. But if fatigue or unexplained weight loss lasts more than a few weeks, medical evaluation is warranted.
How doctors determine whether symptoms mean cancer
If you report urinary symptoms or pain, a doctor will start by taking a history and doing a physical exam, often including a digital rectal exam (DRE) to feel the prostate directly. They may order a PSA blood test, which measures a protein the prostate produces. Elevated PSA can suggest cancer, but it also rises with age, infection, or benign enlargement.
If PSA is high or the DRE feels abnormal, the next step is usually an ultrasound or MRI to image the prostate, followed by a biopsy if imaging raises concern. A biopsy means taking small tissue samples from the prostate with a needle and examining them under a microscope—this is the only way to confirm cancer is present. Not every man with high PSA or urinary symptoms needs a biopsy; doctors weigh the risk of cancer against the discomfort and small risks of the procedure.
What symptoms do not mean about prostate cancer
Having urinary symptoms does not mean you have cancer. Benign prostate enlargement affects most men over 60 and causes identical symptoms. Urinary tract infections, bladder problems, and side effects from medications can all mimic prostate cancer symptoms.
Conversely, the absence of symptoms does not mean cancer is not present. Many men with prostate cancer feel completely normal. This is why screening—PSA testing and sometimes DRE—exists: to find cancer before symptoms develop, when treatment options are broader and outcomes are often better.
The only way to know what is causing symptoms is to see a doctor. They can order tests, interpret results in the context of your age and health history, and discuss next steps with you.
Frequently Asked Questions
Can you feel prostate cancer by touching your abdomen?
No. The prostate sits deep inside the pelvis, below the bladder. You cannot feel it from outside the body. A doctor can feel it during a digital rectal exam—inserting a gloved finger into the rectum to touch the back of the prostate. A hard or lumpy prostate may suggest cancer, but only a biopsy confirms it.
Is pain always a sign that prostate cancer has spread?
No. Pain in the lower back or pelvis can come from many causes—arthritis, muscle strain, kidney problems, or other conditions. But persistent pain in these areas, especially if accompanied by urinary symptoms or weight loss, should be evaluated by a doctor.
What is the difference between prostate cancer symptoms and BPH symptoms?
Prostate cancer and benign prostate hyperplasia (BPH) cause nearly identical urinary symptoms: weak stream, difficulty starting, frequent urination, and nighttime urination. The difference is that BPH is non-cancerous growth. Only a biopsy can distinguish between them. Both warrant medical evaluation.
If I have no symptoms, should I get screened for prostate cancer?
That depends on your age, family history, and personal preference. Men over 50 (or over 40 if you have a family history of prostate cancer) may discuss screening with a doctor. Screening can find cancer early, but it also carries risks—false positives that lead to unnecessary biopsies, and detection of slow-growing cancers that may never cause harm. A doctor can help you weigh these trade-offs.
Can prostate cancer cause blood in urine?
Yes, though it is not common. Blood in urine or semen can occur if cancer grows large enough to affect blood vessels in or near the prostate. But blood in urine more often comes from kidney stones, urinary tract infections, or bladder problems. Any blood in urine should be reported to a doctor.