Gastro-Esophageal (GE) Reflux: can also be due to peptic ulcer or gastritis. There could be abdominal pain, unexplained pain or crying between meals, frequent spitting or vomiting; sleep disturbance.

Allergy: will see child reject certain foods consistently; diarrhea

Hypersensitivity: may see child reject oral stimulation; has a history of oral over stimulation (Nasogastric Tubes), or lack of normal stimulation (Prolonged Gastrotomy tube feeding). May also see with tracheotomy.

Pain: could be due to oral lesions, look for dental caries, inflammation, burns, lacerations. Could also be esophageal lesions, comes with history of surgery, stricture, burns, tumors, malformations.