The most common cause of ACNES is the cause that isn't known. Most of the time people just don't know how they got it. In the Netherlands that percentage lays around 54%. Another cause is pregnancy, during pregnancy or during labor when mom needs to push or needs a C-section, or after pregnancy someone can get ACNES. (9%) Man get it mostly after a groin capture. (9%) If you had any other type of surgery than you also can get ACNES (20%) or during work or abnormal activities you can cause ACNES (7 & 3%). Al those percentages you see right here are bases on Dutch research.