Perineal hernia

Perineum in humans
The muscles of the male perineum
The muscles of the female perineum
Anatomical terminology [edit on Wikidata]

Perineal hernia is a hernia involving the perineum (pelvic floor). The hernia may contain fluid, fat, any part of the intestine, the rectum, or the bladder. It is known to occur in humans, dogs, and other mammals, and often appears as a sudden swelling to one side (sometimes both sides) of the anus.

A common cause of perineal hernia is surgery involving the perineum.^{[medical citation needed]} Perineal hernia can be caused also by excessive straining to defecate.^{[medical citation needed]} Atrophy of the levator ani muscle and disease of the pudendal nerve may also contribute to a perineal hernia.^{[medical citation needed]}