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About Semen: page 4

Color in Semen or Foul Smelling Semen


Updated May 29, 2014

Written or reviewed by a board-certified physician. See About.com's Medical Review Board.

  • Red or Brown Semen

  • If your semen has a red or brown appearance, it is probably from a burst blood vessel in the prostate. This can happen with normal ejaculation, and within a day or two, the semen should return to its normal color. If the discoloration continues for longer than a few days, you should see your doctor. Persistent blood in the semen may result from infection, trauma, and rarely, cancer.

  • Yellow or Green Semen

  • Normal semen may have an off-white or slightly yellow tint. Semen with a pronounced yellow or green color may indicate an infection, possibly due to a sexually transmitted disease called gonorrhea. Go to your local STD clinic. If your semen is discolored due to a gonorrhea infection, treatment with antibiotics is necessary.

  • Foul-Smelling Semen

  • Foul smelling semen is nearly always a sign of infection. Go and see your doctor.


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