 [ Symptoms ] what kinds of medicines do i need to stock at home [ Disease ] hi this could be pancreatitis decreased appetite fever pain on lower left side are expected in pancreatitis get his ultrasonography done pancreatic amylase alkaline phisphatase and liver function tests need to be done he may also have urinary tract infection give him plenty of fluids to drink and start him on antibiotics and digestive enzymes consult a gastroenterologist thanks