Runny nose, scratchy throat, a day on the couch — most colds resolve in 7 to 10 days with rest and fluids. But some "colds" are sinus infections, flu, strep, or early pneumonia wearing a disguise. Here are five signs I tell my own patients to watch for.
1. Symptoms that worsen after day 10
A cold should trend better, not worse. If congestion, cough, or facial pressure intensify after ten days — or improve then sharply rebound — bacteria may have joined the party. That's the classic sinus-infection pattern, and it usually needs treatment.
2. A fever above 101.3°F that won't break
Low fevers are your immune system working. A high fever persisting more than three days, or any fever that returns after going away, deserves a clinician's eyes — a quick video visit can sort it out.
3. Trouble breathing or wheezing
Shortness of breath, whistling when you exhale, or a tight chest are never "just a cold." These symptoms warrant same-day care, and severe cases need the ER.
4. Severe sore throat with white patches
Painful swallowing with white spots on the tonsils, tiny red dots on the palate, or swollen neck glands can signal strep throat — which needs antibiotics and a confirmatory test we can order near you.
5. Dehydration or symptoms in a vulnerable person
Very young children, older adults, pregnant patients, and anyone with asthma, diabetes, or immune suppression should seek care earlier — even for seemingly mild colds.
When in doubt, a ten-minute video visit costs far less than a week of guessing. Our doctors diagnose most upper-respiratory concerns in a single call and send prescriptions to your pharmacy within the hour.
Key takeaways
- • Improving by day 10 is normal; worsening is not.
- • Persistent high fever, breathing trouble, and severe sore throat need care.
- • Vulnerable groups should seek help sooner.