The term ‘allergic’ can be bandied about excessively and erroneously; but allergies are no fun, sometimes even serious, and it’s important to determine if your child could potentially have one. Here are the true signs of an allergy in babies.
Plenty newborns emerge with a sprinkling of spots on their visage, but eczema is more intense—red, scaly, sometimes even itchy. It can progress from the face to the limbs, and then in the folds of knees and elbows. Eczema can be the precursor to other allergic conditions—this progressive constellation of reactions referred to as ‘the atopic march’: for example, as many as 30 percent of young children with eczema also have food allergies. (source: https://nationaleczema.org/food-allergies-and-children-with-eczema/)
Food allergy vs food intolerance
A food intolerance refers to the condition whereby an enzyme required to break down a protein to make it digestible is absent. The result is usually some form of intestinal discomfort.
A food allergy, on the other hand, is an immune system response to a trigger food or ingredient, manifesting as a severe, usually immediate reaction, including hives, lip swelling, vomiting, diarrhea, and wheezing.
A prolonged cough
If your baby has a persistent cough, without the attendant symptoms of cold or flu, there’s a possibility she may have allergic asthma. Asthma causes airway inflammation, causing coughing, wheezing, and shortness of breath. Eczema, food allergies and asthma can often present concurrently.
If you suspect any of the following, always consult with your doctor—don’t rely on self diagnosis alone.
Via parents.com ( https://www.parents.com/baby/health/allergy/how-to-diagnose-a-baby-allergy/ )