Urinary catheterization tends to be more painful and uncomfortable for men than for women, and the primary reason is anatomical: the male urethra is roughly four to five times longer than the female urethra and follows a curved path through the prostate and penis. That extra length and curvature mean more tissue contact, more friction, and more opportunity for the catheter to meet resistance. But the full picture is more layered than “men have it worse across the board,” because the type of discomfort, when it peaks, and what helps differ between the sexes in ways that matter for anyone facing the procedure.
Why Urethral Length Changes Everything
The female urethra runs about 3 to 5 centimeters from the bladder to the external opening. The male urethra, by contrast, stretches roughly 18 to 22 centimeters and bends in an S-shape as it passes through the prostate gland and curves beneath the pubic bone before traveling the length of the penis. When a catheter is threaded through a shorter, straighter tube, there is simply less surface area being stimulated and fewer points where the catheter tip can catch or drag. A review of catheterization techniques noted that anesthetic jelly is not even considered mandatory for female catheterization precisely because the urethra is so short.1Nigerian Journal of Medicine. Urethral Catheters and Catheterization Techniques
In men, the prostate gland wraps around the urethra just below the bladder. Even in younger men with a normal-sized prostate, the catheter has to navigate through this segment, which can cause a distinct pressure or burning sensation. In older men with an enlarged prostate, this stretch of the journey becomes genuinely difficult. The catheter may not pass at all on the first attempt, and forcing it risks creating a false passage in the urethral wall. Clinicians sometimes resort to specialized techniques such as threading a thin guidewire into the bladder first and then sliding the catheter over it, specifically to avoid the trauma that brute force can cause.2PubMed Central. Glidewire-assisted Foley catheter placement: a simple and safe technique for difficult male catheterization
Pain During Insertion vs. Pain Afterward
It helps to separate the catheterization experience into two distinct phases, because the sex difference plays out differently in each one. During insertion, men typically report sharper, more intense sensations than women. The catheter passing through the curved, longer urethra creates friction and stimulates nerve endings along its entire path. Women can certainly find insertion uncomfortable or stinging, but the brevity of the passage means the unpleasant part is over in seconds.
After insertion, once the catheter is in place and the balloon is inflated inside the bladder, a different kind of discomfort takes over. This is known as catheter-related bladder discomfort, and it feels like a persistent, urgent need to urinate even though the catheter is doing the draining. Research at a university hospital found that about 82% of male patients developed this syndrome, compared with roughly 34% of female patients. Men were nearly nine times more likely to experience it.3Surgical Science. Catheter Related Bladder Discomfort: Epidemiological Aspects and Predictive Factors at Kamenge University Hospital A literature review examining predictors of this post-insertion discomfort confirmed male sex as a consistent risk factor, noting that the indwelling catheter stimulates a larger area of the urethra in men and that the S-shaped bend adds mechanical irritation that women’s anatomy simply does not create.4PubMed Central. Predictors of Catheter-Related Bladder Discomfort After Surgery: A Literature Review
That same review cited survey data showing that male patients were significantly less satisfied with the catheterization experience than female patients, with men rating their satisfaction at roughly 4.2 out of 10 compared with about 2.8 out of 10 for women (lower scores indicating greater satisfaction on that particular scale).4PubMed Central. Predictors of Catheter-Related Bladder Discomfort After Surgery: A Literature Review
When Sex Doesn’t Seem to Matter
Not every study finds a clean split between men and women. A study evaluating pain and embarrassment during urodynamic testing, which involves catheterization as part of the procedure, looked at whether sex, age, or other factors predicted who reported the most painful sensations. The researchers found that age under 54 and the patient’s level of apprehension beforehand were the only significant predictors of pain. Sex did not emerge as an independent factor.5PubMed. Comprehensive evaluation of embarrassment and pain associated with invasive urodynamics
This result is worth sitting with for a moment. It suggests that psychological state and age may matter as much as anatomy in some clinical settings. Younger patients, regardless of sex, reported more pain, and patients who walked into the procedure anxious had worse experiences. This fits with what pain researchers have documented more broadly: anxiety amplifies pain perception. If you are tense and fearful, your pelvic floor muscles tighten, which makes catheter passage harder and more uncomfortable regardless of urethral length. So while anatomy creates a baseline disadvantage for men, individual variation in anxiety, muscle tension, and pain sensitivity can blur that line considerably.
The Lidocaine Question
One of the most telling differences between male and female catheterization is how the medical community handles pain relief. In men, applying lidocaine gel into the urethra before catheter insertion is standard practice in most hospitals. A randomized trial comparing lidocaine gel with plain lubricant in male patients found that lidocaine reduced pain scores by about a third on a visual analog scale.6Academic Emergency Medicine. Comparison of Topical Anesthetics and Lubricants Prior to Urethral Catheterization in Males: A Randomized Controlled Trial The gel needs a few minutes to take effect, and some men find the injection of gel itself uncomfortable, but the payoff during catheter passage is real.
In women, the picture is murkier, and this is where an interesting clinical debate lives. One systematic review with meta-analysis concluded that lidocaine gel does not significantly reduce pain during female catheterization compared with plain lubricant.7PubMed. Lidocaine lubricant jelly does not reduce pain perception during female urethral catheterization: A systematic review with meta-analysis and trial sequential analysis However, a more recent systematic review and meta-analysis reached the opposite conclusion, finding that 2% lidocaine gel did produce a meaningful reduction in catheterization pain in women compared with water-based lubricant alone.8International Journal of Urological Nursing. Does 2% Lignocaine Gel Reduce Urethral Catheterisation Pain in Women? A Systematic Review and Meta‐Analysis
The conflicting results likely reflect differences in which studies each review included and how they measured pain. But the practical takeaway is this: many hospitals still skip lidocaine for women and use only plain lubricant, partly because the female urethra is short enough that the catheter passes before the anesthetic would have time to work anyway. Whether that practice should change is an active question. If you are a woman facing catheterization and worried about discomfort, asking for lidocaine gel is reasonable, even if the evidence on whether it helps is mixed.
Complications That Skew Male
Beyond the sensation of the procedure itself, catheterization carries risks of physical injury, and these too are distributed unevenly. A prospective multi-center study tracking urethral injuries from catheterization found an incidence of about 13 per 1,000 catheters inserted in male patients. The injuries came from two main sources: inflating the anchoring balloon while it was still inside the urethra rather than the bladder, and creating a false passage by pushing the catheter through the urethral wall. Nearly 80% of injured patients went on to develop urethral stricture disease, a scarring condition that narrows the urethra and can require repeated procedures to manage.9PubMed Central. Long-term outcomes of urethral catheterisation injuries: a prospective multi-institutional study This kind of traumatic injury is rare in women for the same anatomical reasons that make insertion less painful: a short, straight urethra with no prostate to navigate around.
Infection risk, on the other hand, tilts toward women. Women are at higher risk for catheter-associated urinary tract infections because their shorter urethras bring bacteria closer to the bladder. A large multicenter study noted this disparity and also found that men were more likely to experience complications related to an enlarged prostate, such as urinary retention when the catheter was removed.10JAMA Internal Medicine. A Multicenter Study of Patient-Reported Infectious and Noninfectious Complications Associated With Indwelling Urethral Catheters So men tend to suffer more from the mechanical side of catheterization, while women face more infectious consequences.
What Actually Helps With the Pain
For men, the single most effective intervention remains lidocaine gel instilled into the urethra several minutes before catheter insertion. Beyond that, catheter size matters: using the smallest diameter catheter that will do the job reduces friction and tissue irritation. Adequate lubrication, gentle technique, and a clinician who does not rush the procedure all contribute. For difficult insertions in men with enlarged prostates, the guidewire technique mentioned earlier can prevent the repeated failed attempts that cause the most trauma.
For both sexes, non-pharmacological approaches have shown promise. A randomized trial found that breathing exercises and the Valsalva maneuver, which involves bearing down as if straining, both reduced pain during catheterization compared with a standard procedure.11PubMed. Breathing Exercises, Valsalva Maneuver Reduce Pain in Peripheral Intravenous Catheterization: Randomized Trial Another randomized trial specifically tested a nasal pressure technique, where the patient exhales against a closed airway through the nose, and found it significantly lowered pain during urinary catheterization. Interestingly, a deep cough technique tested in the same trial actually increased pain compared with the control group, suggesting that not all distraction methods are interchangeable.12PubMed Central. Comparison of the efficacy of two non-pharmacological techniques in reducing pain during urinary catheterization: a randomized clinical trial
If you know you are going to be catheterized, one of the most practical things you can do is manage your anxiety. The research linking apprehension to worse pain outcomes is consistent enough that it is worth taking seriously. Ask the clinician to explain each step as it happens. Slow, deliberate breathing can help relax the pelvic floor muscles, making the catheter’s passage easier. And do not hesitate to ask for lidocaine gel if it is not offered, particularly if you are male.
Catheterization in Children
Parents facing a catheterization for their child often wonder whether it will hurt more for boys or girls. A randomized controlled study of infants younger than two months compared pain responses during both suprapubic aspiration and transurethral catheterization. Pain scores differed between boys and girls in the catheterization group, consistent with the anatomical differences that already exist even in infancy.13Pediatrics. Pain in Infants Who Are Younger Than 2 Months During Suprapubic Aspiration and Transurethral Bladder Catheterization: A Randomized, Controlled Study The male infant urethra is already proportionally longer than the female infant urethra, so the basic anatomical story holds from the very beginning of life.
For young children who need repeated catheterizations, such as those with spinal cord conditions requiring intermittent self-catheterization, the learning curve and the emotional component become at least as important as the anatomy. Pediatric urologists generally recommend generous lubrication, age-appropriate explanation, and in some cases topical anesthetic for boys.
How Catheter Design Has Evolved
The modern Foley catheter, first introduced in the mid-1930s, was originally made from latex. Since then, catheter materials have gone through substantial changes aimed at reducing two of the biggest problems: infection and the encrustation that can block the drainage channel. Manufacturers have experimented with silver coatings, hydrogel surfaces, silicone construction, and even catheters embedded with slow-release antimicrobial agents.14PubMed. Materials for urinary catheters: a review of their history and development in the UK
From a comfort standpoint, the shift from latex to silicone has been the most significant change. Silicone is softer, causes less tissue reaction, and is less likely to trigger latex allergies. Hydrogel-coated catheters become slippery when wet, which reduces friction during insertion and the ongoing irritation of having a tube sitting in the urethra. For intermittent catheterization, where users insert and remove a catheter multiple times a day, pre-lubricated single-use catheters have made the experience substantially less painful than the reusable, manually lubricated options of earlier decades. These design improvements benefit both sexes, but they disproportionately help men, who have more urethral surface area for friction to act on and who bear the brunt of mechanical discomfort in the first place.