Painful urination (dysuria)
Burning, stinging or discomfort when passing urine. By far the commonest cause is a urinary tract infection, but it can also come from sexually transmitted infections, thrush, irritation, or in men the prostate — so the cause is worth pinning down, especially with fever or blood.
What it means
Painful urination (dysuria) is a burning, stinging or aching sensation felt when passing urine. It signals irritation or inflammation somewhere in the lower urinary tract or genital area. The commonest cause by far is a urinary tract infection, particularly a bladder infection (cystitis), usually with needing to pass urine more often and urgently. But there are other causes worth distinguishing: sexually transmitted infections (such as chlamydia or gonorrhoea, which can cause dysuria sometimes with a discharge), thrush (a yeast infection) or other vaginal irritation in women, skin irritation from soaps or products, and, in men, inflammation of the prostate (prostatitis). Occasionally bladder stones or, rarely, bladder problems including cancer cause it. The key questions that shape what to do are whether it is just a simple bladder infection or something needing a different treatment, whether there are features of a more serious infection (fever, back pain), and whether a sexually transmitted infection needs testing.
Common causes
- Urinary tract infection (cystitis) — by far the commonest; with frequency and urgency.
- Sexually transmitted infections — chlamydia, gonorrhoea; sometimes with a discharge.
- Thrush or vaginal irritation (women) — itching and discomfort.
- Skin or product irritation — soaps, spermicides, hygiene products.
- Prostatitis (men) — prostate inflammation, with pelvic or perineal discomfort.
- Bladder or kidney stones.
- Rarely — bladder problems including cancer, especially with painless blood in the urine.
Lab work-up approach
Painful urination is usually assessed with a urine dipstick and, when needed, a urine culture, which together confirm a UTI and guide antibiotic choice. When a sexually transmitted infection is possible, specific tests (swabs or urine tests for chlamydia and gonorrhoea) are arranged. Blood tests are not needed for a simple bladder infection, but a white cell count and CRP help if a more significant infection (such as a kidney infection) is suspected. Mediora.AI can surface a raised white-cell/CRP pattern that fits a significant infection, but painful urination is diagnosed mainly by urine testing and the clinical picture, with your doctor.
Tests Mediora.AI can interpret
Related conditions
Panels to consider
When to see a doctor
A simple bout of painful urination with frequency, in an otherwise well person, often reflects a bladder infection and can be managed with fluids and, if needed, a short antibiotic course from a doctor or pharmacist. Seek prompt medical care if it comes with fever, chills, back or side pain, nausea (possible kidney infection), or blood in the urine, or if you are pregnant, male, a young child, older or frail, or have recurrent infections — these warrant proper assessment. Consider testing for sexually transmitted infections if there is a new partner, a discharge, or genital symptoms. Painful urination that persists despite treatment, or comes with blood, needs further assessment. Mediora.AI helps flag markers of a significant infection; painful urination is diagnosed with urine testing by your doctor.