What symptoms should you look out for? It may be difficult to tell the difference between the cold, the flu, and COVID-19. The Cleveland Clinic has a great symptom chart that outlines the different symptoms between these illnesses, and tests can more accurately identify which illness you may have.
The Cold vs. The Flu
Determine if you have the Flu
| Signs & Symptoms | Common Cold | Influenza (Flu) |
|---|---|---|
| Symptom Onset | Gradual | Abrupt |
| Fever | Rare | Common (lasts 3-4 days) |
| Aches | Slight | Common (often severe) |
| Chills | Uncommon | Fairly common |
| Fatigue, Weakness | Sometimes | Usual |
| Sneezing | Common | Sometimes |
| Chest discomfort / cough | Mild to moderate hacking cough | Common (can be severe) |
| Stuffy nose | Common | Sometimes |
| Sore throat | Common | Sometimes |
| Headache | Rare | Common |
Although the flu and cold are similar, flu symptoms come on much more abruptly than cold symptoms.
Mayo Clinic Article: What does the Flu look like?
Here is a compiled list of common symptoms of the flu:
- Fever over 100.4°F (38°C)
- Aching muscles (especially in your back, arms, and legs)
- Chills and sweats
- Headache
- Fatigue and weakness
- Dry, persistent cough
- Shortness of breath
- Diarrhea and vomiting (in children)
- Tiredness and weakness
- Runny or stuffy nose / congestion
- Sore throat
- Eye pain
It is recommended that if any serious symptoms arise, seek medical care at once.
Some of these symptoms include:
- Difficulty breathing or shortness of breath
- Sharp pains when breathing
- A severe sore throat
- A cough that produces a lot of green or yellow mucus
- Chest pain
- Ongoing dizziness or faintness
- Seizures
- Worsening of existing medical conditions
- Severe weakness or muscle pain
Children may show similar signs, but it is recommended to watch for pale, gray, or blue-colored skin, lips, or nail beds.