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
Navel piercing a fashion show in London in 1993. The popularization of the piercing, however, is accredited to the 1993 Aerosmith music video for their song "Cryin'," wherein Alicia Silverstone has her navel pierced by body piercer Paul King. The easy concealment of a navel piercing with clothing, even during the healing process, has contributed to the widespread adoption of this piercing. Navel jewelry has become more extensive in recent years. Many new designs, such as the ancient Bali jewelry designs, have been added to everyday navel cultures. Barbells remain the most common. The world's first belly huggy was designed and patented