An umbilical hernia occurs when a portion of the intestine or fatty tissue pushes through a weak spot in the abdominal muscles near the navel. This condition is common in infants but can also affect adults. It often appears as a small bulge around the belly button, which may become more noticeable when the person coughs, laughs, or strains. Most umbilical hernias are not serious and may close on their own, especially in infants. However, if the hernia becomes painful or shows signs of complications, such as strangulation (where blood supply is cut off), medical intervention may be necessary. Treatment typically involves surgery to repair the defect.