This appears to be an umbilical hernia, which is common in newborns. The bulge becomes more prominent during crying/straining and reduces when the baby is relaxed or sleeping. In most babies, it is harmless and closes spontaneously as the abdominal muscles strengthen.
Next Steps
Have the baby examined by a pediatrician to confirm the diagnosis and assess the hernia.
Usually, no treatment is required initially; observation is recommended.
Keep the umbilical area clean and dry and continue routine newborn care.
Surgical repair is generally considered only if the hernia persists beyond early childhood, is very large, or develops complications.
Health Tips
Do not use coins, tight bands, adhesive tape, or abdominal binders over the umbilicus.
Seek urgent medical attention if the swelling becomes hard, painful, red/discoloured, cannot be pushed back when the baby is relaxed, or is associated with vomiting, abdominal distension, poor feeding, or excessive crying.