Learn how to deal with a newborn’s crying during a diaper change and determine if it’s due to abdominal bloating or umbilical hernia.

A four-month-old baby suddenly starts crying excessively and is difficult to comfort. Possible reasons include physiological needs such as hunger, diarrhea, and intestinal cramps, as well as diseases like oral ulcers and colds. Additionally, calcium deficiency or skin abnormalities may also cause crying. Pay attention to the baby’s sleep quality, dietary condition, and any other discomfort symptoms, and provide appropriate care and treatment.