Tag: Flu

Articles tagged «Flu»

Woman with closed eyes blows her nose into a paper tissue, struggling with a runny nose from a common cold

Common Cold (ARI): How It Progresses, How Long It Lasts, and When It's No Longer a Cold

A cold comes on gradually over 2–3 days and resolves within 1–2 weeks. We explain what happens day by day and when it's time to see a doctor.

Internal Medicine · 3 min · updated October 31, 2026

Boy lies in bed with a thermometer in his mouth and a hand on his forehead, checking his fever from the flu

Flu: How It Differs from a Cold and Which Symptoms Are Dangerous

Flu starts abruptly and knocks you off your feet, while a cold creeps up gradually. We explain how not to confuse them, who is at risk of complications, and when to see a doctor immediately.

Internal Medicine · 4 min · updated October 31, 2026