The testicles, or testes, are important for the production and storage of sperm until they’re mature enough for ejaculation. They also produce testosterone, which is responsible for sex drive, ...

The scrotum is a sac of skin that hangs from the body at the front of the pelvis, between the legs. It sits next to the upper thighs, just below the penis. The scrotum contains the testicles. These ...

Dear Reader: When a baby boy is an embryo, the testicles form in the lower part of the abdomen (the pelvis). In the weeks before the baby is born, the testicles move down out of the pelvis into a sac ...

When Dr. Jonathan Reisman was in medical school, he unexpectedly found himself thinking about food while dissecting a human cadaver. During the dissection, his professor talked about which parts of ...

Doctors also refer to a swollen testicle as testicular enlargement. It occurs when the scrotum (the sac surrounding the testicles) grows abnormally large. Testicular swelling occurs when fluid starts ...

Possible causes of one testicle being bigger than the other include epididymitis, epididymal cysts, a hydrocele, testicular torsion, and more. Treatment depends on the cause. Self-exams can help ...

Possible causes of testicular lumps include cysts, varicoceles, testicular torsion, and more. In rare cases, lumps on testicles can be a sign of testicular cancer. The majority of lumps found in the ...

Injuries, infections, kidney stones, hernias, and testicular cancer can all cause testicular pain. Sometimes, pain in your balls may not have an obvious cause and will go away without treatment. Get ...