Trichomonas vaginalis is a sexually transmitted disease caused by a tiny parasite found in the vagina and urethra. Up to fifty percent of people do not show symptoms but those who do will usually have symptoms begin to show between three and 21 days after infection. In women, symptoms include increased discharge which may have a musty or fishy smell, itching, soreness and inflammation, pain when urinating or during sexual intercourse, and tenderness in the lower abdomen. In men, symptoms include a thin, whitish discharge, and pain or burning when urinating. Treatment is with antibiotics but naturopathy may also help.