Use a comma to separate nonessential elements from a sentence. More specifically, when a sentence includes information that is not crucial to the message or intent of the sentence, enclose it in or separate it by commas.
Genital warts are a sexually transmitted infection (STI) caused by certain strains of the human papillomavirus (HPV). These skin growths can cause pain, discomfort, and itching. They are especially dangerous for women because some types of HPV can also cause cancer of the cervix and vulva.
The term seed warts does not mean there are tiny seeds inside your warts. All warts are caused by a virus called HPV or the human papillomavirus. HPV will cause warts everywhere on your body including your genital area. This virus is spread from person to person by direct contact.