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.
Warts are non-cancerous skin growths caused by a viral infection in the top layer of the skin or mucous membranes.Viruses that cause warts belong to a family called human papillomavirus (HPV). There are over 100 different types of HPV.arts are non-cancerous skin growths caused by a viral infection in the top layer of the skin or mucous membranes.