There can be allergies due to food , stress , pollen . But it is very important to have a proper history of what causes the allergy.
Next Steps
Observe if after stoping the below food items is there any relief.
Health Tips
I would suggest to stop having baked items , never have raw bread always grill it . Also stop having spicy food, chat masala , Amchur powder or anything that contains it which include it like farsan, bhel Puri or pani puri , peanuts.