Analysis of the condition: it is navel inflammation, and everyone will have more or less secretions in the navel. A small amount of secretions will play a protective role, but too much secretions or brown substances will flow out. Considering the periumbilical infection, we should go to the hospital for diagnosis. And navel inflammation.

The sunken navel is a dark corner, which is easy to accumulate water and scale and not easy to dry. In addition, the temperature here is suitable, which is a good culture medium for bacteria.

Suggestion: First of all, keep the navel skin clean and dry, and don't wash any powder or lime without high temperature disinfection in the navel. We can use a sterile cotton swab dipped in 75% alcohol to scrub the secretion of umbilical residue or the depression of umbilical fossa, then apply 1% gentian violet or 2.5% iodine, and then wrap it with sterile gauze. Umbilitis can be light or heavy, so it is best to go to the hospital for examination and treatment.