Hello, trichomonal vaginitis is mainly characterized by pruritus vulvae and increased leucorrhea, which is light yellow foam. In severe cases, leucorrhea can be mixed with blood. It is also accompanied by burning sensation, sexual pain, frequent urination, dysuria, and even hematuria when accompanied by urinary tract infection. When trichomonas parasitizes urethra and bladder, trichomonas cystitis, frequent urination, urgency and even intermittent hematuria may occur. Trichomonas is also the cause of infertility.