There is a black lump in the belly button

The belly button is formed when the umbilical cord is cut when the baby is born. It is located in the more vulnerable part of the human abdomen, and it can expel debris from the abdomen. The common black lumps in the belly button are formed by the accumulation of debris, so people should pay attention to personal hygiene and take a bath regularly in daily life. The belly button can be said to be a channel connecting the abdomen with the outside world, so if there is a black lump on it, there may be other reasons. Detailed introduction: What is the cause of the black lump in the belly button?

Umbilical hernia is an extra-abdominal hernia in which the contents of the abdominal cavity protrude through a weak area at the umbilicus. The umbilicus is located in the middle of the abdominal wall and is the last part of the abdominal wall to close during embryonic development. The lack of fat tissue in the umbilicus causes the outermost skin, fascia and peritoneum of the abdominal wall to be directly connected together, making it the weakest part of the entire abdominal wall. The contents of the abdominal cavity can easily protrude from this part to form an umbilical hernia. Clinical manifestations:

1. Umbilical hernia in infants

Most of them are reducible hernias, which are more common, while incarceration is rare. When crying, standing or exerting force, a lump swells in the umbilicus with a diameter of 1 to 2 cm. There are no other symptoms and it is often discovered accidentally during bathing or changing clothes. Most of them are hemispherical or cylindrical, with a small scar on the top, which is the umbilical scar. The characteristic of the tumor is that it is reversible, that is, the tumor becomes fuller and larger when the child cries, coughs, or stands upright, and the tumor feels firm. When the child is quiet or the parents press on it with their hands, the tumor shrinks or retracts into the abdominal cavity, accompanied by bowel sounds. After the tumor shrinks or retracts, some loose skin folds remain in the area. The above is a typical umbilical hernia. When the tumor is large, especially when the child is crying and the abdominal pressure increases, the skin on the surface becomes shiny and appears thinner. Some parents worry that the umbilical hernia will be ruptured. In fact, due to the elasticity and toughness of the skin, there is no possibility of rupture unless it is caused by trauma.

2. Umbilical hernia in adults

It is more common in middle-aged obese multiparous women. The main symptoms are a hemispherical hernia in the umbilicus, which can be retracted, accompanied by indigestion, abdominal discomfort and dull pain. The hernia ring is usually small, and the surrounding scar tissue is tougher, making it more prone to incarceration and strangulation. The huge umbilical hernia is hanging.