iliohypogastric nerve
Ilioinguinal nerve pain can be caused by surgery and a trauma that occurs in the abdominal region. Learn the causes, signs and symptoms, and treatment of ilioinguinal nerve pain. The ilioinguinal nerve is located above the iliac crest (upper ridge of the hip bone) and travels into the groin. This nerve provides sensation to the upper inner thigh, groin, and perineum. The perineum is between the anus and the scrotum in men. In women, the perineum is located between the anus and vaginal (labia) opening. The size of the ilioinguinal nerve is in inverse proportion to that of the iliohypogastric. Occasionally, the nerve is very small and ends by joining the iliohypogastric. When this occurs, a branch from the iliohypogastric takes the place of the ilioinguinal nerve, or the latter nerve may be altogether absent.