COVID-19 VS Allergies

Allergies

COVID-19

Common Symptoms Treated

Sneezing, runny nose, itchy eyes, nasal congestion, hives, or skin rash

Fever, cough, sore throat, body aches, shortness of breath, fatigue, loss of taste or smell

Medication Type

Antihistamines, decongestants, nasal corticosteroids, leukotriene modifiers

Antiviral drugs, fever reducers, cough suppressants, corticosteroids (severe cases), monoclonal antibodies (severe/high-risk cases)

Examples of Drugs

- Antihistamines: Cetirizine, Loratadine, Fexofenadine - Decongestants: Pseudoephedrine, Oxymetazoline - Steroids: Fluticasone

- Antivirals: Paxlovid (nirmatrelvir/ritonavir), Remdesivir - Fever reducers: Acetaminophen, Ibuprofen - Steroids: Dexamethasone

How They Work

Block histamine receptors, reduce inflammation in nasal passages

Antivirals inhibit virus replication; fever reducers manage inflammation; monoclonal antibodies neutralize the virus

Prescription Required

Often available OTC (over-the-counter); some require prescriptions

Most require prescriptions, especially antivirals and monoclonal antibodies

Duration of Use

Long-term for seasonal allergies; short-term for acute symptoms

Short-term (typically 5–10 days for antivirals or symptom relief during illness)

Age Restrictions

Varies; antihistamines suitable for children (age-specific dosages)

Antivirals generally approved for adults; some drugs are approved for children based on weight and age

Side Effects

Drowsiness, dry mouth, dizziness (antihistamines); nasal irritation (sprays)

Nausea, diarrhea, fatigue, headache, or rare allergic reactions (antivirals); steroids may cause increased blood sugar levels

Pregnancy Use

Loratadine and Cetirizine considered safer options

Limited data for some drugs; acetaminophen for fever is generally safe; antivirals like Paxlovid are evaluated case by case

Availability

Widely available at pharmacies

Limited availability for antivirals and monoclonal antibodies; depends on region and severity

Usage Monitoring

Minimal; OTC drugs require basic dosing adherence

Requires careful monitoring of kidney/liver function for antivirals and oxygen levels for severe cases

Drug Interactions

Minimal with OTC drugs; check labels for interactions

Significant, especially with Paxlovid (interaction with many medications); requires physician review

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Frequently Asked Questions

How can I tell the difference between COVID-19 and allergies?

COVID-19 often includes fever, body aches, and loss of taste or smell symptoms not typical with allergies. Allergies usually cause sneezing, itchy eyes, and runny nose without fever. Testing is the best way to confirm if symptoms are from COVID-19 or allergies.

Do allergies cause a fever like COVID-19?

No, allergies do not cause fever. If you have a fever, it's more likely to be an infection like COVID-19. Allergies mainly cause symptoms like sneezing, congestion, and itchy eyes, not body aches or chills.

Can COVID-19 feel like seasonal allergies?

Yes, early COVID-19 can mimic allergy symptoms like sneezing or congestion. But COVID-19 may also include cough, fever, fatigue, and loss of smell. If symptoms are new or unusual, it's best to get tested.

Should I get tested for COVID-19 if I think it's just allergies?

If your symptoms are different from your usual allergies or you've been exposed to someone with COVID-19, testing is a good idea. It helps prevent spreading the virus, especially if symptoms overlap.

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