Grayish-black semen color may be caused by injury, infectious factors, malignant tumors and other factors.
1. injury: men’s lower body suffered an acute injury, resulting in local damage to the prostate or seminal vesicles bleeding, in the reproductive organs of the memory for a long time, mixed with the semen, will lead to changes in the color of semen, gray-black or soy sauce color.
2. Infectious factors: such as prostatitis or seminal vesiculitis, when the infection continues to worsen, resulting in local damage or necrosis, which will lead to semen color change to gray, accompanied by perineal swelling and pain, ejaculatory pain and other symptoms.
3. malignant tumors: for example, malignant tumors of the seminal vesicles or prostate cancer, after the local necrosis of the tissue, mixed with the semen, will make the semen color change to gray-black, may also cause male infertility.
Grayish-black semen may also be caused by other factors, and it is recommended that the patient go to a regular hospital as soon as possible for examination and treatment.