Trichomoniasis is a common sexually transmitted infection caused by a tiny parasite called Trichomonas vaginalis. It primarily affects the genital area in both men and women. Many people with trichomoniasis do not show any symptoms, but when they do, symptoms can include itching, burning, and unusual discharge. The infection is usually spread through sexual contact, making it important for sexually active individuals to get tested regularly. Treatment typically involves antibiotics, which can effectively clear the infection. Practicing safe sex, such as using condoms, can help reduce the risk of contracting trichomoniasis and other sexually transmitted infections.