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Experts Explain How to Tell Virus from Allergies
Symptoms can be similar, but there are key differences to watch for.
Apr. 12, 2026 at 6:59pm
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An X-ray view reveals the internal structures affected by both viral infections and seasonal allergies.Oklahoma City TodayAs allergy season ramps up, many people are struggling to determine whether their symptoms are caused by a virus or just seasonal allergies. Health experts have provided guidance on how to distinguish between the two, noting that while some symptoms may overlap, there are distinct differences that can help identify the root cause.
Why it matters
Correctly identifying the source of one's symptoms is crucial, as the appropriate treatment and precautions will vary greatly depending on whether it's a virus or allergies. Misdiagnosis could lead to unnecessary isolation, missed work, or improper medication.
The details
Experts say that while both viruses and allergies can cause sneezing, runny nose, and nasal congestion, there are some key differences. Viruses typically bring on fever, body aches, and fatigue, whereas allergies do not. Allergy symptoms also tend to be more consistent, while viral symptoms can come and go in waves. The color of mucus can also be a clue, with viral infections often producing thicker, yellow or green discharge.
- Allergy season typically ramps up in the spring months.
The players
KFOR 4 Oklahoma City
A local television news station serving the Oklahoma City metropolitan area.
The takeaway
As allergy season arrives, being able to distinguish viral and allergy symptoms can help people get the right treatment and avoid unnecessary isolation or missed work. Paying attention to factors like fever, consistency of symptoms, and mucus color can provide important clues.
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