The practitioners use of shared instruments is thought to aid the transmission of hepatitis B, hepatitis C and HIV, although no epidemiological studies have shown this. Long term
Late complications vary depending on the type of FGM. They include the formation of scars and keloids that lead to strictures and obstruction, epidermoid cysts that may become infected, and neuroma formation (growth of nerve tissue) involving nerves that supplied the clitoris. An infibulated girl may be left with an opening as small as 2–3 mm, which can cause prolonged, drop-by-drop urination, pain while urinating, and a feeling of needing to urinate all the time. Urine may collect underneath the scar, leaving the area under the skin constantly wet, which can lead to infection and the formation of small stones. The opening is larger in women who are sexually active or have given birth by vaginal delivery, but the urethra opening may still be obstructed by scar tissue. Vesicovaginal or rectovaginal fistulae can develop (holes that allow urine or faeces to seep into the vagina). This and other damage to the urethra and bladder can lead to infections and incontinence, pain during sexual intercourse and infertility.Painful periods are common because of the obstruction to the menstrual flow, and blood can stagnate in the vagina and uterus. Complete obstruction of the vagina can result in hematocolpos and hematometra (where the vagina and uterus fill with menstrual blood). The swelling of the abdomen and lack of menstruation can resemble pregnancy.
Type IIa is removal of the inner labia; Type IIb, removal of the clitoral glans and inner labia; and Type IIc, removal of the clitoral glans, inner and outer labia. Excision in French can refer to any form of FGM. Type III
Type III (infibulation or pharaonic circumcision), the "sewn closed" category, is the removal of the external genitalia and fusion of the wound. The inner and/or outer labia are cut away, with or without removal of the clitoral glans. Type III is found largely in northeast Africa, particularly Djibouti, Eritrea, Ethiopia, Somalia, and Sudan (although not in South Sudan). According to one 2008 estimate, over eight million women in Africa are living with Type III FGM. According to UNFPA in 2010, 20 percent of women with FGM have been infibulated. In Somalia, according to Edna Adan Ismail, the child squats on a stool or mat while adults pull her legs open; a local anaesthetic is applied if available:

The element of speed and surprise is vital and the circumciser immediately grabs the clitoris by pinching it between her nails aiming to amputate it with a slash. The organ is then shown to the senior female relatives of the child who will decide whether the amount that has been removed is satisfactory or whether more is to be cut off. After the clitoris has been satisfactorily amputated ... the circumciser can proceed with the total removal of the labia minora and the paring of the inner walls of the labia majora.