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Education & Diagnosis
Allergy vs Cold
How to tell whether you have allergies or a cold — both cause sneezing and congestion, but differences in duration, fever, and symptom pattern reveal which one and how to treat it.
Medically Reviewed
Dr. Payel Gupta
Triple Board-Certified Allergist & Immunologist
Last reviewed: May 2026
Overview
Allergies and colds can cause similar symptoms—runny nose, congestion, sneezing—but have different causes and treatments. Allergies are immune responses to allergens; colds are viral infections.
symptoms
allergy
- Itchy eyes, nose, or throat
- Symptoms last weeks or months
- Clear, thin nasal discharge
- No fever typically
cold
- Sore throat, body aches
- Symptoms last about 7–10 days
- Thicker discharge, may be colored
- Low-grade fever possible
testing
- Allergy testing (skin or blood) if allergy suspected
- History and physical exam
treatment
allergy
- Avoid allergens
- Antihistamines
- Nasal corticosteroids
- Immunotherapy for long-term control
cold
- Rest, fluids
- Pain relievers or decongestants as needed
- No specific cure; supportive care
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