Swollen Testicles
Free Symptom Checker
with Physician-supervised AI
Reviewed By:
Jason Chandrapal, MD (Urology)
Dr Chandrapal received his MD degree from Texas Tech Health Science Center School of Medicine. After graduation he did a research fellowship with the University of Utah Division of Urology, followed by 4 years of urology residency at Duke University. In 2020 he began a 2 year tenure as an Interprofessional Advanced Clinical Simulation Fellow at the Durham VA in Durham, NC where he created and implemented clinical simulations with an emphasis on emotional intelligence. Additionally he has experience with medical writing and consultation for Buoy Health.
Nao Saito, MD (Urology)
After graduating from Tokyo Women's Medical University School of Medicine, Dr. Saito worked at Tokyo Women's Medical University Hospital, Toda Chuo General Hospital, Tokyo Women's Medical University Yachiyo Medical Center, and Ako Chuo Hospital before becoming Deputy Director (current position) at Takasaki Tower Clinic Department of Ophthalmology and Urology in April 2020.
Yoshinori Abe, MD (Internal Medicine)
Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.
Content updated on Jul 19, 2024
Following the Medical Content Editorial Policy
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Try one of these related symptoms.
Testicle pain
Left testicle pain
Right testicle pain and lower abdomen pain
Lower stomach and testicle pain
Lump on testicle
Testicle lump
Left testicle pain after vasectomy
Testicle pain after ejaculation
Lump in scrotum
How Ubie Can Help You
With a free 3-min Swollen Testicles quiz, powered by Ubie's AI and doctors, find possible causes of your symptoms.
This questionnaire is customized to your situation and symptoms, including the following personal information:
Biological Sex - helps us provide relevant suggestions for male vs. female conditions.
Age - adjusts our guidance based on any age-related health factors.
History - considers past illnesses, surgeries, family history, and lifestyle choices.
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Your personal report will tell you
✔ When to see a doctor
✔︎ What causes your symptoms
✔︎ Treatment information etc.
People with similar symptoms also use Ubie's symptom checker to find possible causes
- One side of the scrotum swollen
- My testicles are getting bigger
- Lump in testicles and color looks different from normal skin
- "Balls" are swelling and the color looks different
- My scrotum is getting bigger
- Scrotum is turning dark red and getting swollen
- The scrotum is swollen
- Scrotum is changing color and getting swollen
- Testicles are swollen
- Scrotum became bigger and turned red or blue
See full list
Just 3 minutes.
Developed by doctors.
Try Free Symptom QuizAbout the Symptom
Enlargement of the scrotum, the sac below the penis, or the testicles, the two organs within the scrotum. Pain due to swelling in this area can range from just feeling uncomfortable to unbearable. There are many causes for scrotal and testicular swelling such as an infection or enlarging fluid filled sac within the scrotum known as a hydrocele. The most serious cause of swelling is testicular torsion, when the testicle twists and stops the blood supply to itself. This is associated with extreme testicular pain, swelling, as well as nausea and vomiting. If you experience these symptoms, you should seek immediate medical attention as delaying treatment may risk in losing the testicle.
When to See a Doctor
Seek professional care if you experience any of the following symptoms
- Swollen scrotum or testicles
Possible Causes
Generally, Swollen testicles can be related to:
- Testicular Tumor
A testicular tumor is a lump or swelling on either testicle. The tumor may be benign, which doesn't spread to other parts of the body, or malignant, commonly known as cancerous, which means it can spread to other parts of the body. Testicular cancer is usually first noted as a firm lump in the testicle. New testicular lumps always need immediate evaluation by a doctor. Pain or discomfort in the affected testicle or lower abdomen might also be present. The primary risk factor is having an undescended testicle or a family history of testicular cancer.
- Hydrocele
A swelling of the scrotum caused by fluid collecting in the space around a testicle. It is common in newborns, older boys and men. It is often caused by inflammation, infection, injury or (much less commonly) cancer.
- Varicocele
A varicocele is a condition where the veins in your scrotum become enlarged. The exact cause is unknown, but experts believe that it may be due to defective valves in the veins within your scrotum. The valves regulate the flow of blood to and from the testicles. It may also occur from compression of a vein by nearby structures. Varicoceles may lead to decreased sperm production and quality as well as dull achy pain after standing for long periods.
Related Serious Diseases
Sometimes, Swollen testicles may be related to these serious diseases:
- Epididymitis
Epididymitis is the swelling and inflammation of the epididymis, a tube at the back of the testicle that carries sperm. Epididymitis is most commonly caused by bacterial infections, including sexually-transmitted infections like chlamydia and gonorrhea.
- Testicular Torsion
- Acute Heart Failure
Doctor's Diagnostic Questions
Your doctor may ask these questions to check for this symptom:
- Are your testicles or scrotum swollen?
- How long have you had swelling in testicles or scrotum?
- How has the swelling in the testicles or scrotum changed since it started?
- Are your testicles swollen and have they changed color?
Just 3 minutes.
Developed by doctors.
Try Free Symptom QuizFind Similar Symptoms
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Symptoms from similar body parts
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Reviewed By:
Jason Chandrapal, MD (Urology)
Dr Chandrapal received his MD degree from Texas Tech Health Science Center School of Medicine. After graduation he did a research fellowship with the University of Utah Division of Urology, followed by 4 years of urology residency at Duke University. In 2020 he began a 2 year tenure as an Interprofessional Advanced Clinical Simulation Fellow at the Durham VA in Durham, NC where he created and implemented clinical simulations with an emphasis on emotional intelligence. Additionally he has experience with medical writing and consultation for Buoy Health.
Nao Saito, MD (Urology)
After graduating from Tokyo Women's Medical University School of Medicine, Dr. Saito worked at Tokyo Women's Medical University Hospital, Toda Chuo General Hospital, Tokyo Women's Medical University Yachiyo Medical Center, and Ako Chuo Hospital before becoming Deputy Director (current position) at Takasaki Tower Clinic Department of Ophthalmology and Urology in April 2020.
Yoshinori Abe, MD (Internal Medicine)
Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.
What People Say about Ubie?
Male, 30s
I got more answers in one minute through your site than I did in three hours with Google.
(Sep 29, 2024)
Male, 20s
My experience was great. I was worried, but the symptom checker helped me narrow down what it might be. I feel a little relieved compared to when I first started, and it gives me a starting point for what my symptoms could mean.
(Sep 27, 2024)
Male, 50s
The questions asked and possible causes seemed spot on, putting me at ease for a next-step solution.
(Sep 26, 2024)
Female, 40s
I was actually very impressed with the results it provided because, although I didn’t mention it during the questionnaire because I thought it was unrelated, it suggested I may have something I’ve actually been diagnosed with in the past.
(Sep 25, 2024)
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Link to full study:
https://www.medrxiv.org/content/10.1101/2024.08.29.24312810v1