Changes to your penis — from erections and sensation to how your foreskin behaves — can offer clues about your overall health. While some symptoms are harmless, knowing what's normal for you and recognising when something isn't can help you decide when to see a doctor.
Dr Babak Ashrafi, a Superdrug Online Doctor GP, outlines some of the most common penile changes and what they could signal.
Erectile dysfunction and what it can reveal
"Many men think of erectile dysfunction as a condition in itself, but it's often a symptom rather than the underlying cause," Dr Ashrafi tells Metro. "An erection relies on healthy blood vessels, nerves, hormones and psychological wellbeing all working together. If something is disrupting one of those systems, the penis can sometimes be one of the first places it becomes noticeable."
Struggling with softness can point to several health issues beyond the bedroom.
High blood pressure: because the blood vessels supplying the penis are much smaller than those supplying the heart, erection changes can be an early warning sign that vessels are narrowing or losing elasticity. Dr Ashrafi says "some men may notice changes to their erections before they experience any other symptoms," adding: "That's why persistent changes shouldn't simply be put down to age."
Diabetes: the condition can affect the blood vessels and nerves involved in erections. If you also have increased thirst, frequent urination, blurred vision or unexplained fatigue, Dr Ashrafi advises speaking to your GP to "rule out" the condition.
High cholesterol: "for some men, changes in erectile function can be an early clue that it's time to have their cholesterol checked."
Low testosterone: this can impact both sexual desire and function. Dr Ashrafi says "it's important to look at the wider picture rather than focusing on one symptom alone." Reduced sex drive alongside persistent tiredness, low mood, reduced muscle strength or fewer spontaneous erections could point to a hormonal role.
Sleep issues: poor-quality rest affects hormone production, cardiovascular health and sexual function. "If someone notices changes in their erections alongside loud snoring, excessive daytime tiredness or poor quality sleep, it may be worth investigating whether an underlying sleep disorder could be contributing," explains Dr Ashrafi.
Lumps, rashes, curves and pain
Not every mark, lump or rash on the penis is sinister — pearly penile papules (PPP) are totally harmless — but some can be linked to sexually transmitted infections such as HPV or herpes, as well as other infections and skin conditions. Dr Ashrafi recommends paying attention to anything new or unusual, but advises against trying to self-diagnose based on appearance alone. "If a change is new, painful, persistent, spreading or accompanied by discharge or other symptoms, speak to a healthcare professional," he adds.
Some penises naturally curve slightly, and if yours has always looked that way and isn't causing problems, there's usually no reason to be concerned. However, Dr Ashrafi says: "What men should be more aware of is a new or worsening curve, particularly if it's accompanied by pain, a lump or hard area in the penis, or difficulty having sex. This can be a sign of Peyronie's disease, where scar tissue develops within the penis." Treatment options are available, so medical advice is recommended.
Pain during sex or painful erections can have several causes, "from infection and inflammation to conditions such as Peyronie's disease". Dr Ashrafi adds: "If the pain is accompanied by symptoms such as sores, blisters, unusual discharge or pain when urinating, it's particularly important to consider whether a sexually transmitted infection could be responsible."
Foreskin issues, swelling and numbness
Difficulty retracting the foreskin can be a sign of phimosis, a condition "where the foreskin is too tight to retract comfortably". According to the NHS, see a doctor if a tight foreskin causes ongoing pain, interferes with sex or urination, or is accompanied by bleeding, discharge or an unusual smell. Treatments range from steroids to surgery, and addressing it early can help avoid paraphimosis, where the retracted foreskin gets stuck.
Redness, soreness and swelling around the head of the penis, particularly with itching, discharge or an unpleasant smell, can point towards an STI or a condition called balanitis, where the glans becomes inflamed. "This can have a number of causes, including irritation, bacterial or fungal infections such as thrush, and certain skin conditions," says the GP. "Recurrent balanitis can sometimes also be associated with underlying conditions such as diabetes, so repeated episodes are something you should discuss with your GP rather than continually treating yourself."
Persistent or unexplained numbness or reduced sensation may not be related to the penis itself. "Conditions such as diabetes can affect the nerves, while certain nutritional deficiencies, including vitamin B12 deficiency, can also cause neurological symptoms," says Dr Ashrafi, who recommends speaking to a doctor about long-term sensation issues, "particularly if you're experiencing numbness or tingling elsewhere in the body too."
