How does the baby indigestion of not full moon do

The baby is young, gastrointestinal function is not yet mature, dyspepsia is mostly caused by improper feeding, if the baby has obvious diarrhea, it may be caused by lack of lactase in the intestinal tract, you can see a doctor to clarify the cause, under the guidance of a doctor, give the baby lactase to relieve symptoms, or replace the hydrolyzed formula feeding.