What is the cause of white pus and foul odor coming out belly button?

White pus and a foul odor coming from the belly button can be caused by several conditions, including:

1. Infection: A bacterial or fungal infection in the belly button can cause inflammation, leading to the production of pus and a foul odor. This can occur due to poor hygiene, improper piercing, or contamination of the navel.

2. Umbilical Hernia: An umbilical hernia occurs when a portion of the intestine protrudes through a weakness in the abdominal wall near the belly button. If the hernia becomes strangulated, it can lead to tissue damage, infection, and the discharge of pus and foul-smelling fluid.

3. Sebaceous Cyst: A sebaceous cyst is a noncancerous growth that develops from a blocked oil gland. When these cysts become infected, they can rupture and release pus and foul-smelling material.

4. Pilonidal Cyst: A pilonidal cyst is a skin condition that occurs in the natal cleft, the area between the buttocks. In some cases, these cysts can extend to the belly button, leading to the discharge of pus and a foul odor.

5. Appendicitis: In rare cases, appendicitis, an inflammation of the appendix, can cause a localized infection that leads to the discharge of pus and a foul odor from the belly button.

It's important to seek medical attention if you notice white pus and a foul odor coming from your belly button. The underlying cause can be diagnosed through a physical examination, medical history, and, if necessary, diagnostic tests. Treatment will depend on the specific condition causing the symptoms and may involve antibiotics, drainage of the infection, or surgical intervention.