From peeing more to lumps, bumps and bending – the 5 penis signs that could point to diabetes, kidney issues or cancer

Published on September 17, 2025 at 03:27 PM
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WHILE there’s a growing recognition of the importance of men’s health, some stigma, lack of awareness, and embarrassment still exists – especially when it comes to men’s penises.

But being proactive about penile and spotting potential issues could be life-saving, according to one expert.

Man holding a magnifying glass over his groin, representing erectile dysfunction.Spotting potential penis issues could be life-saving

Like any body part, the penis can offer up clues when something isn’t quite right.

Changes may arise when using the toilet or even when you’re in the bedroom.

And recognising potential problems early could prevent conditions worsening and avoid severe complications such as .

According to Shafi Wardak, from private health clinic The Forbury Clinic, there are obvious signs like pain, swelling and discharge, which are subtle indicators that can hint at underlying health issues.

There are some lesser-known signs to watch out for too.

Changes in urination pattern

Changes in the way that you urinate, including frequency, stream strength, and colour, should be monitored closely, said Wardak.

He explained: “They may indicate underlying health conditions such as urinary tract infections, prostate issues, or metabolic disorders like .”

The following changes serve as crucial warning signs, and should prompt individuals to seek medical evaluation and intervention.

  • Increased urination frequency: Frequently needing to urinate can be a sign of urinary tract infections (UTIs), particularly if accompanied by a burning sensation. It may also indicate an overactive bladder or prostate issues such as benign prostatic hyperplasia (BPH). Additionally, increased urination can be a symptom of diabetes, as the body attempts to expel excess glucose through urine.
  • Decreased urination frequency: Urinating less frequently can be a sign of dehydration, where the body conserves water. It may also indicate an obstruction in the urinary tract or severe kidney issues where the kidneys are not filtering urine effectively.
  • Weak urine stream: A weak or interrupted urine stream can be associated with prostate problems, such as BPH or prostate cancer, which can obstruct the flow of urine. Urethral strictures, which narrow the urethra due to injury or infection, can also cause a weak stream.
  • Changes in urine colour: Dark urine often indicates dehydration, but can also signal liver problems if the urine is dark brown. Red or pink urine may suggest the presence of blood, which could be due to a variety of causes, including infections, kidney stones, or more serious conditions such as bladder or .

Skin abnormalities

Changes in the skin on the penis should be noted and taken seriously.

Wardak warned: “Even small differences in texture, colour, or appearance, like rashes, bumps, or spots, need attention.

“While some changes might be minor irritations or reactions, others could signal fungal infections or conditions such as jock itch.”

Look out for the following…

  • Rashes: A rash on the penis can have multiple causes. A fungal infection or contact dermatitis (an allergic reaction to soaps, lotions, or other substances) are common causes. A healthcare professional should evaluate persistent rashes that do not respond to over-the-counter treatments.
  • Bumps and lumps: Bumps on the penis can vary in significance. Small, flesh-coloured bumps may be pearly penile papules, which are harmless. However, bumps can also indicate genital warts caused by the (HPV), molluscum contagiosum (a viral infection), or more serious conditions like penile cancer, especially if the bumps change in size or shape.
  • Blisters and ulcers: Blisters, which can burst and form painful ulcers, are often a sign of genital herpes, a common (STI). Painless ulcers, on the other hand, may be indicative of syphilis, another STI. These conditions require medical evaluation and treatment.
  • White patches: White patches on the penile skin could be a sign of lichen sclerosis, a chronic skin condition that causes thin, white patches. If left untreated, this condition can lead to scarring and phimosis (tightening of the foreskin).
  • Scaling and cracking: Dry, scaly skin that cracks can be a symptom of or , both chronic inflammatory skin conditions. These conditions can cause significant discomfort and may require specific treatments to manage.
  • Discolouration: Any sudden or unexplained discolouration, such as dark or light patches, should be noted. While some discolouration can be benign, it can also indicate skin conditions or infections.

Curvature

Curved cucumber against a red background.Peyronie’s disease can lead to discomfort and self-image issues

Penile curvature, while often normal, can sometimes indicate Peyronie’s disease, where scar tissue causes excessive bending during erection.

Wardak advised: “This condition can lead to discomfort and self-image issues. Lifestyle adjustments are crucial in managing Peyronie’s disease and promoting penile health.

“These adjustments may include maintaining a healthy weight, adopting a balanced rich in fruits, vegetables, and whole grains, and engaging in regular physical activity.

“Additionally, avoiding tobacco and excessive consumption can support overall well-being.”

Penile odour

Persistent penile odour can be worrying and may include underlying issues such as inadequate hygiene or infections like balanitis.

Wardak said: “Regular washing with mild soap and water is crucial for maintaining good penile hygiene and preventing odour.

“Additionally, wearing clean, breathable underwear made of natural fibres can help reduce moisture and bacterial growth.”

Weak or reduced ejaculations

Illustration of sperm cells.A reduction in ejaculate volume could indicate low testosterone, dehydration, or a blockage in the ejaculatory ducts

Weak or reduced ejaculations, where there is a noticeable decrease in the volume or force of ejaculation, can be a sign of underlying health issues.

Wardak shared some key points to consider…

  • Decreased ejaculate volume: A reduction in ejaculate volume can be associated with several factors. It can occur naturally with age, but it may also indicate issues such as low testosterone levels, dehydration, or a blockage in the ejaculatory ducts. Chronic conditions like diabetes can also impact ejaculate volume.
  • Weak ejaculatory force: A decrease in the force of ejaculation can be due to weakened pelvic floor muscles, which can result from ageing, lack of exercise, or certain medical conditions. Strengthening these muscles through specific exercises helps improve this condition. Weak ejaculation can also often be treated by making changes to your lifestyle, using medication to enhance your sexual function, taking part in therapy, or performing exercises to strengthen your pelvic floor muscles.

If you have any concerns about any of these problems, it’s always best to see your .

Symptoms and advice for penile health management

Changes in urination pattern – stay hydrated and monitor urine colour. If symptoms persist, seek medical evaluation.

Skin abnormalities – practice good hygiene and seek medical advice if changes persist or worsen.

Curvature – monitor changes and discomfort. Gentle stretching exercises may help; consult a specialist if concerned.

Penile odour – maintain good hygiene practices, including regular washing with mild soap and water.

Weak or reduced ejaculations – strengthening exercises, staying hydrated, medication.

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