Navel changes to diet and exercise, unexpected change in shape may be the result of ascites. In addition to change in shape being a possible side effect from ascites and umbilical hernias, the navel can be involved in umbilical sinus or fistula, which in rare cases can lead to menstrual or fecal discharge from the navel. Menstrual discharge from the umbilicus is a rare disorder associated with umbilical endometriosis. To minimize scarring, the navel is a recommended site of incision for various surgeries, including transgastric appendicectomy, gall bladder surgery, and the umbilicoplasty procedure itself. Abdominal thrusts is a first aid method
Cultural views on the navel skin too much and about their outfits. In 2013, Yoona, a member of Korean girl band Girls' Generation, caused a minor controversy by revealing an exposed midriff featuring a protruding cantaloupe-like outie navel, which started a spirited discussion and polarized opinions on the Chinese-language internet. Although, the formal wear is expected to cover the stomach and belly button. In 2005, Vivienne, a virtual girlfriend created by software maker Artificial Life Inc. of Hong Kong, was reprogrammed not to bare her navel or display body piercings in conservative Muslim countries including Malaysia to avoid problems. In 2006, Nik Abdul Aziz Nik