Which symptom is most commonly associated with Trichomoniasis?

Frothy, yellow-green vaginal discharge is the symptom most commonly associated with Trichomoniasis. This sexually transmitted infection is caused by the parasite Trichomonas vaginalis and often presents with a distinct discharge that is characterized by its color and consistency. This discharge is a result of inflammation in the vagina and cervix caused by the infection, leading to increased fluid production and changes in normal vaginal flora.

In contrast to the other symptoms listed, sever abdominal pain is not typically a primary symptom of Trichomoniasis; this could suggest other complications or different conditions. Frequent urination can occur but is more associated with other urinary tract infections rather than Trichomoniasis specifically. Genital warts are caused by human papillomavirus (HPV) and are unrelated to Trichomoniasis. Thus, the discharge characteristic of the infection is the hallmark symptom that enables proper identification and diagnosis.