10 Signs You Could Have Allergies

5. Runny Nose

As mentioned, allergens can cause postnatal drip as your body produces more mucus. An allergic reaction may be followed by excessive sneezing, a runny nose, or stuffy nose.

Basically, an allergen will increase inflammation and the release of histamine. You will know that you have allergies and not a cold because you will generally feel the most irritation within your eyes and throat. If you're concerned, seek medical attention and ask for a patch test to be administered.