Testicle Pain Checker

Epididymitis is inflammation of the epididymis — the coiled tube behind the testicle that stores and carries sperm. Orchitis is inflammation of the testicle itself, and the two often occur together (sometimes called epididymo-orchitis). The usual picture is one testicle, or the cord behind it, becoming painful, swollen, and tender over the course of hours to a day or two, sometimes with a fever, painful urination, or discharge. It is a treatable condition — usually with antibiotics — but it needs a clinician to confirm the cause and prescribe the right treatment. It is not the same as testicular torsion, which is a surgical emergency this checker screens for first.

Most often an infection. In sexually active men — particularly younger men — the common causes are the sexually transmitted infections chlamydia and gonorrhea, which is why STI testing is part of the work-up. In older men, or in anyone with urinary problems, an enlarged prostate, or a recent catheter or urinary procedure, it is more often caused by the same kinds of bacteria that cause urinary infections (such as E. coli). Because the cause changes the right treatment, a clinician will usually test the urine and, when relevant, test for STIs before or alongside starting antibiotics.

Testicular torsion is when the spermatic cord twists and cuts off the blood supply to the testicle — a surgical emergency with only a short window, often just a few hours, to save it. The warning signs are sudden, severe testicular pain (classically bad enough to wake you from sleep), a testicle that rides high or lies at an odd or horizontal angle, and nausea or vomiting with the pain. Epididymitis, by contrast, usually comes on gradually over hours to days and is more often paired with fever, painful urination, or discharge. But the two can look alike, and you cannot reliably tell them apart yourself — so if the pain is sudden and severe, or you have any of those torsion signs, do not wait: go to the nearest emergency room now, or call your local emergency number. That is exactly why this checker screens for torsion before anything else.

No — and it is built not to. It reads a symptom pattern and reports whether that pattern fits, partly fits, or doesn't clearly fit epididymitis or orchitis, always routing you to a clinician. It cannot examine you, test your urine, or run the STI tests that actually identify the cause, and several other conditions can cause a painful or swollen testicle. Most importantly, it cannot rule out testicular torsion — which is why any sudden, severe testicular pain is treated here as an emergency regardless of anything else you enter. The honest answer a checker can give is 'this is worth getting seen for,' never a diagnosis.

A clinician takes your history and examines the scrotum, usually tests a urine sample, and — when an STI is possible — tests for chlamydia and gonorrhea. A scrotal ultrasound is sometimes used, especially if there is any doubt about torsion. Treatment is a course of antibiotics chosen for the likely cause, along with rest, scrotal support, and pain relief; symptoms improve over a few days but the full course is finished as prescribed. If the cause is a sexually transmitted infection, recent sexual partners also need testing and treatment, and it helps to avoid sex until you and any partners have completed treatment. Getting seen promptly matters because untreated infection can cause complications.

Yes. This checker runs entirely in your browser. Your answers are read on your own device and are never sent to a server, saved, or shared — close the tab and they're gone. It's general educational information based on the CDC STI Treatment Guidelines, the Urology Care Foundation, and MedlinePlus; it can't diagnose you, isn't a test, and doesn't replace being seen by a licensed clinician. Sudden, severe testicular pain always needs emergency in-person care.