In order to successfully treat your swollen testicles, it is imperative to know the underlying cause. Experts say that your health care provider will perform a physical examination and may ask you a series of questions about the swelling such as, when it developed, if it was like a bolt from the blue, if it's getting worse all the time and the size. Quantify as accurately as you can. Of course, most likely he will take a close look. He will also be interested to know if the swelling may be fluid and if you feel tissue in the swollen area, if the swelling is in one part of the testicle or in the entire testicle, if you've ever had surgery on the genital area. You'll also want to let your doctor know if you ever had an injury or trauma to your testicles. Or if you've had an infection lately. Also let the doctor know if the swelling go down after you rest in bed and of any other pain or symptoms.