Symptom Guide

Symptom Guide

Unfortunately, infants and very young children cannot use words to tell you what’s wrong. But physical symptoms can speak volumes if you know what you’re looking for.

Symptoms of a milk allergy or milk allergy-related conditions can be as diverse as inconsolable crying, baby rash, diarrhea, vomiting and wheezing. This guide should help you identify symptoms so you can discuss them with your doctor and dietitian.

You can also visit our Food Allergy Glossary for definitions of food allergies and GI-related terms.

Symptom Guide  /  GI Symptoms  /  Diarrhea


Bowel movements that occur more frequently and are more watery in consistency than normal.

Diarrhea can be caused by toxins or bacterial, viral and parasitic infections, but also by food allergies, digestive system diseases (stomach, liver, pancreas), or intestinal inflammatory diseases (Crohn's disease, ulcerative colitis).  Severe diarrhea could lead to dehydration quickly.