Trichomoniasis, or trich as it is commonly called, is a type of sexually transmitted disease. Many men and women who have this STD do not even know that they are affected. However, trich is one of the easiest and most successfully cured STDs. An antibiotic is administered, which will cure trich. Even just one single dose can cure this STD. However, those who have had the disease may become infected again, so it is important for their sexual partners to be diagnosed and treated to prevent infection again.