4 doctors weighed in:
What is the relationship between allergy and cold sores?
4 doctors weighed in

Dr. Michael P Vaughn
Internal Medicine - Allergy & Immunology
2 doctors agree
In brief: Unlikely cause
Cold sores (apthous ulcers) are often triggered by stress.
Hypothetically, suffering from poorly controlled "allergies" might be stressful enough to possibly trigger an ulcer or the lack of sleep, due to chronic nasal congestion from allergies, might be physiologically "stressful", but allergies do not directly "cause" these ulcers.

In brief: Unlikely cause
Cold sores (apthous ulcers) are often triggered by stress.
Hypothetically, suffering from poorly controlled "allergies" might be stressful enough to possibly trigger an ulcer or the lack of sleep, due to chronic nasal congestion from allergies, might be physiologically "stressful", but allergies do not directly "cause" these ulcers.
Dr. Michael P Vaughn
Dr. Michael P Vaughn
Thank
Dr. Alan Khadavi
Internal Medicine - Allergy & Immunology
In brief: No relationship
There is none.

In brief: No relationship
There is none.
Dr. Alan Khadavi
Dr. Alan Khadavi
Thank
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