text: trichomoniasis-what are they,list them in stages?   that is a sexually transmitted disease that you need treatment for. flagyl is usually the drug of choice for this problem. you are contagious if you haven't been treated. it is a small one celled amoeba like creature that is living and multiplying in your body. it could damage your body if not treated, not too mention the people you are sleeping with getting it too. good luck!