Feeding intolerance can be manifested by nuisance symptoms such as abdominal distension, gassiness, fussiness, and/or spit-up…or more severe symptoms such as rash, wheezing, eczema, vomiting, and/or diarrhea. Feeding intolerance in infancy – whether benign or serious – often results in a change in feedings. At its worst, feeding intolerance and its treatment attempts may lead to delayed attainment of full oral feedings, suboptimal nutrition, and/or prolonged parenteral nutrition.