What should I do if my 3-month-old baby has diarrhea?

In general, diarrhea in a 3-month-old baby may be caused by factors such as a cold abdomen, acute enteritis, or gastrointestinal flora imbalance, and treatment should be targeted according to the specific cause. 1. A cold abdomen may accelerate intestinal motility, resulting in insufficient absorption of water as food passes through the intestines, leading to diarrhea. Under medical guidance, treatments such as pediatric diarrhea patches, oral Xia'er Xieli Ning Syrup, or Xia'er Xieli Powder may be used. 2. Acute enteritis is primarily caused by an acute infection in the intestines, clinically presenting with diarrhea. Anti-infective treatment should be administered under a doctor's supervision, along with comprehensive management including medications like蒙脱石散 (smectite powder). 3. Gastrointestinal flora imbalance typically refers to a disruption of the normal dynamic equilibrium of gut microbiota within the body and its external environment. Clinically, it manifests as diarrhea, often with undigested stools. Under medical guidance, drugs such as Clostridium butyricum and bifidobacterium live bacterial powder (two-strain) or lactasin granules may be used to restore balance. It is recommended to seek timely medical attention.