Epididymitis :
When the tube that carries the sperm from the testicle (the epididymis) swells up, it is called epididymitis. It can cause pain in the testicle, scrotum, or epididymis. This condition can be acute or chronic. Acute epididymitis can cause intense pain. In chronic epididymitis, the pain lasts for six weeks or more but tends to be less intense than in acute epididymitis. The condition can also cause fever, chills, blood in the semen, and swollen testicles. It typically results from a bacterial infection but can also be caused by an STI, a blockage in the urethra, or a groin injury. Diagnosis requires a physical exam coupled with an analysis of the urine and blood. A swab test or ultrasound may also be required. Treatment usually involves antibiotic medication, but depending on the cause, other medications and surgery may be recommended.