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.
Etiology: 1  Concussion is the main cause for osselets. 2  Upright pastern also can produce navicular disease with osselets. 3  Constant hard work results in chronic form. 4  In cases of serous arthritis synovia will increases and leads to pressure and causes new bone growth. 5  The purnlent form is the result of penetrating wound.