Swollen Eyelids: Causes, Allergies & Child Care

A swollen eyelid in a child or adult can be caused by food allergies, infections, or irritation. Identifying why one eyelid is sore and swollen is necessary for determining the best course of relief and treatment.

Food Allergies Causing Swollen Eyelids

Published Aug,14 2017 | By Diane Marks

A food allergy is a mistake of the immune system, according to Kids Health. The immune system protects the body from harmful substances, such as viruses and bacteria. During a food allergy reaction, the immune system mistakes the food as a harmful substance and attempts to fight it off.