Influenza (Flu)

Signs and Symptoms:

Influenza

Cold

Onset

Sudden

Gradual

Fever

> 101 ° F, lasting 3 to 4 days

None or < 101 ° F

Cough

Dry, sometimes severe

Hacking

Headache

Prominent

Rare

Myalgias (muscle pain)

Usual, often severe

Uncommon or mild

Tiredness & Weakness

Lasting 2 to 3 weeks

Very mild and brief

Extreme exhaustion

Early and prominent

Never

Chest discomfort

Common

Uncommon or mild

Stuffy nose

Sometimes

Common

Sneezing

Sometimes

Typical

Sore Throat

Sometimes

Common