Sudden, severe pain in one testicle is an emergency. Go to the ER right away, because it can be testicular torsion, a twisted testicle that cuts off its own blood supply. MedlinePlus reports that most testicles can be saved when surgery happens within 4 to 6 hours. This guide covers the warning signs, who is most at risk, and what happens when you arrive.
Why Sudden Testicle Pain Cannot Wait
Testicular torsion is a twist in the spermatic cord, which holds the testicle in the scrotum. According to MedlinePlus, the twist cuts off blood flow to the testicle and nearby tissue.
The clock starts when the pain starts. One MedlinePlus page says most testicles can be saved if surgery happens within 4 hours, and another puts the mark at 6 hours. Children’s Health in Dallas reports that about 35 to 40% of torsion patients wait so long that the testicle has already died.
“Time is critical. Six hours is not much time to get to the hospital, have the necessary diagnostic tests and get into surgery.”
Bruce Schlomer, MD, pediatric urologist at Children’s Health and associate professor at UT Southwestern, in Testicular torsion: Signs, causes and what to do
Testicular Torsion Symptoms
MedlinePlus lists these main symptoms of testicular torsion:
- Sudden severe pain in one testicle. The pain may start without a clear reason.
- Swelling within one side of the scrotum.
- Nausea or vomiting.
Other signs can include a lump in the testicle, blood in the semen, and a testicle that sits higher in the scrotum than normal.
The pain does not always start in the scrotum. Children’s Health notes that many boys first feel bad belly pain, and the scrotal pain comes after. Belly pain with nausea in a boy or young man deserves a question about the testicles.
When to Go to the ER for Testicle Pain
According to MedlinePlus, sudden, severe testicle pain needs immediate care. Go to an emergency room right away if:
- Your pain is severe or sudden.
- You had an injury to the scrotum and still have pain or swelling after 1 hour.
- Your pain comes with nausea or vomiting.
MedlinePlus also advises calling a provider right away for a fever or a lump in the scrotum. The same goes for a scrotum that is warm, red, or tender.
For torsion symptoms, MedlinePlus is specific. Go to an emergency room instead of an urgent care, in case you need surgery right away.
Who Is Most at Risk for Testicular Torsion?
Torsion can happen at any age. MedlinePlus says it is most common in young men between 10 and 20 years old, and it also occurs in the first year of life. Children’s Health reports that about 65% of cases happen in adolescents ages 11 to 19.
It can follow an injury to the scrotum that causes a lot of swelling, or heavy exercise. In some cases there is no clear cause at all.
Some males are simply more prone to it. Dr. Schlomer explains that the way the testicle is attached inside the scrotum is looser in some boys, which lets it twist more easily.
Why Boys and Men Wait Too Long
Groin pain is hard to talk about, especially for a teenager. Children’s Health reports that most treatment delays happen at home. One study it cites found that males under 18 waited up to 20 hours before going to the emergency room.
Parents can close that gap before it opens. Tell your son that sudden pain in the testicle, groin, or lower belly is never something to hide or sleep off.
“In these cases, every hour counts; waiting too long can mean permanent damage, loss of the testicle, and even future fertility problems.”
Martina Ambardjieva, MD, urologist, in Why sudden testicular pain is an emergency on KevinMD
What Else Causes Testicle Pain?
Not every case is torsion. MedlinePlus lists these other common causes:
- An injury to the testicles
- Infection or swelling of the sperm ducts (epididymitis) or the testicles (orchitis)
- Fluid collections, such as enlarged veins (varicocele), a cyst (spermatocele), or fluid around the testicle (hydrocele)
- A hernia or a kidney stone
From the outside, these can look alike. Dr. Schlomer’s advice is that any concern about torsion calls for a scrotal exam and an ultrasound to rule it out.
A painless lump still needs a doctor visit. MedlinePlus notes that testicular cancer is almost always painless, and any testicle lump should be checked.
What Happens at the ER for Testicle Pain?
At ER of Irving, an emergency physician examines the scrotum and asks when the pain started. Our on-site ultrasound checks blood flow to the testicle at any hour, and our lab can test urine for infection.
Torsion is repaired in an operating room. If the ultrasound shows torsion, the physician arranges a direct transfer to a hospital surgical team, with your imaging already done. Children go directly to Children’s Health Dallas or Cook Children’s when subspecialty care is needed.
If the cause is an infection or a kidney stone, treatment can often start during the same visit. Our pediatric emergency team sees children 24 hours a day.
We are open 24 hours a day at 8200 N MacArthur Blvd, Suite 110, Irving, TX. Walk in any time, or call (972) 893-3148.
FAQs
Should I go to the ER or urgent care for testicle pain?
Go to the ER for sudden or severe pain. MedlinePlus advises choosing an emergency room over an urgent care for torsion symptoms, in case surgery is needed right away. Our guide on ER vs. urgent care covers other conditions too.
How long do you have to fix testicular torsion?
Hours, not days. MedlinePlus reports that most testicles can be saved with surgery within 4 to 6 hours of the pain starting. The chance of losing the testicle rises after 6 hours.
Is testicle pain after getting hit an emergency?
Brief pain after a hit is common. MedlinePlus advises getting care right away if pain or swelling is still there 1 hour after the injury. An injury that causes a lot of swelling can also lead to torsion.
Can I take pain medicine and wait to see if it gets better?
Not for sudden, severe pain. Waiting uses up the hours that matter most. Dr. Schlomer’s message to boys and men with this kind of pain is simple: “Don’t try to tough it out!”
Can a child get testicular torsion?
Yes. MedlinePlus notes it is more common in the first year of life and at the start of puberty. Children’s Health lists swelling and a change in scrotal skin color, especially red or darkening, among the signs. Either one in a child needs to be seen right away.
Medically reviewed by the ER of Irving Medical Team | Updated: September 2026
