It's called hemospermia hematospermia or the presence of blood in semen, whether visible or not. Symptoms that often precede this condition can range from blood in urine even painful ejaculation, swelling in the scrotum or in the groin area, fever or chills, urine, etc. You can not always determine the cause, but is usually related to an inflammation of the seminal vesicles, caused by infection or injury. It can also be a sign of disease in some area of ​​the male genitalia. Hematospermia to treat, is often recommended to rest and apply ice. The resulting infections may require antibiotics, while for urinary tract obstruction is often used surgery.