There are four main types of female genital mutilation defined by the World Health Organization (WHO): Type I: Clitoridectomy—Partial or total removal of the clitoral glans (visible part of the clitoris) and / or the prepuce (the fold of skin surrounding the clitoris) Type II: Excision—Partial or total removal of the clitoral glans and the labia minora, with or without removal of the labia majora Type III: Infibulation—Narrowing of the vaginal opening by cutting and repositioning the labia minora or labia majora, sometimes through stitching, with or without removal of the clitoral prepuce / clitoral hood and glans Type IV: Other—All other harmful procedures done to the female genitals for nonmedical purposes (such as pricking, piercing, carving [incising], scraping, and cauterizing the genital area) (See also the WHO's Female genital mutilation fact sheet.)