Trichomoniasis is a sexually transmitted disease caused by the protozoan Trichomonas vaginalis. Rarely, the infection may also be passed from a pregnant woman to her baby.
Often, there are no symptoms. If symptoms do occur, in women they may include a profuse, yellowish-green, foul-smelling vaginal discharge; painful inflammation of the vagina ,vaginitis ; and painful urination. Some women may also develop cystitis (inflammation of the bladder,).
In men, symptoms may include a white discharge from the penis and painful urination; some men also develop nongonococcal urethritis.
Treatment with antibiotics usually clears up the infection.
Sexual partners should also be offered treatment to prevent reinfection.