- Runny nose
- Nasal congestion
- Constant sneezing
- Itching sensation in the eyes, nose, and throat
- Reduced ability to smell or taste
- Frequent ear infections and sinus infections
- Frequent, unexplained nosebleeds
- Experiencing cold-like symptoms for more than 10 days
- Constantly feeling fatigued
- Symptoms that recur at the same time every year
- Hives or rashes
- Swelling of the throat, tongue, lips or face
- Mouth tingling
- Trouble breathing
- Nausea
- Vomiting
- Diarrhea
- Chest or abdominal pain
- Dizziness or fainting
- Hives or rash
- Swelling at the sting or bite site
- Shortness of breath
- Persistent itching
- Reddening
- Flaking or peeling
- Swelling
- Dry, cracked patches
- Clear fluid oozing
If left untreated, allergies may cause complications such as chronic cough, head congestion, recurring infection in the ears and sinus, hearing loss, and may even lead to asthma.