Question
A three-year-old baby has been suffering from diarrhea for three days and currently has very little urine. Yesterday, there was almost no urine. Today, the baby urinated once, but there was still pink residue on the underwear. The baby previously had a mild pneumonia and started having diarrhea on the third day after receiving intravenous treatment. The diarrhea stopped after taking Mongshi San powder. Seven days after discharge, the baby started having diarrhea again in the afternoon, with watery stools, which have now turned into curd-like stools. I would like to ask what effects the intravenous treatment for pneumonia might have on the baby’s body, why the baby is experiencing diarrhea, why the urine output has decreased, and what should be done. Please provide medical assistance.