To be sure that your toddler does not have a cold, check for fever, sore throat, swollen neck glands, and ear aches. These are typical cold symptoms and could likely be accompanied by a stuffy nose. If these symptoms are not present, look for allergy symptoms such as an itchy nose, watery eyes, or trouble breathing. Some children with allergies will have a dark area under the eye that is a bit purple. This is commonly referred to as an “Allergic Shiner” and can be a telltale sign of an allergy.
If the stuffiness in your toddler’s nose seems to be only on one side there is another thing you should check. Toddlers are known for sticking things in their noses and it is possible that she has tucked away something in her nostril. If this is the case, bad breath will usually accompany the stuffiness.