Water retention, also known as edema, occurs when excess fluid builds ... or range of motion in the joints due to swelling ...

Your scrotum is the sac beneath your penis that holds your testicles, which make sperm. Scrotal lymphedema causes your scrotum to thicken and grow to the size of a grapefruit or hang below your knees.

Symptoms like a fever, skin that's warm to the touch, and worsening swelling may be a cause for concern. Swelling, or edema, happens if fluid builds up in your tissues. Blood gathers in the veins ...