Greetings.
Since when is this? Is this the right testicle or left? How big it becomes? How long does it stays swollen? How does the swelling subsides? Is it painful and tender when swollen? Are you diabetic? Any past prolonged illness? Do you have any urinary symptoms? Were any investigations done?
Dr. Arun
Hello,
An on and off swelling, which is not painful, can be following;
1) Varicocele; this is swollen venous (pampiniform plexus) plexus, which are multiple veins of the testes.
2) Hernia
3) Hydrocele of the cord
4) Spermatocele
5) Lymph varix
This needs an evaluation by your physician and an ultrasound study.
Please feel free for your follow up questions.
Doctor (MD)
MBBS, MS (General Surgery), Post-doctoral Fellowship in Sports Medicine