Quick Answer: Colds and flu can both cause cough, sore throat, congestion, and fatigue. Colds usually develop more gradually and tend to be milder. Flu often comes on quickly and is more likely to cause fever, chills, body aches, headache, and significant fatigue. Symptoms overlap, so testing may be useful when the answer will affect treatment.
You wake up with a sore throat and congestion. By lunch, you are coughing and tired. Is it a cold, the flu, or something else?
If you need to be seen, Make You Well provides urgent and primary care in Richardson for flu, respiratory illnesses, and other common health concerns.
Why It Can Be Hard to Tell
The common cold and influenza are both respiratory illnesses, and the symptom lists overlap. The biggest clues are usually how fast the illness started and how hard it hit you.
Signs It Is More Likely a Cold
Colds tend to build gradually. You may notice a scratchy throat first, followed by a stuffy nose, sneezing, and a cough. You can feel tired or achy, but symptoms are often milder than the flu.
- Runny or stuffy nose
- Sneezing
- Sore throat
- Cough
- Mild headache or body aches
- Mild fatigue
Signs It May Be the Flu
Flu tends to make a stronger entrance. Symptoms can develop quickly, and body aches, chills, headache, and fatigue are more common. Fever is common with flu, but not everyone who has the flu will have one.
- Sudden onset of symptoms
- Fever or feeling feverish
- Chills
- Body aches
- Headache
- Cough
- Significant fatigue
Why Knowing the Difference Matters
For most colds, treatment is focused on rest, fluids, and symptom relief. Flu can be more serious for older adults, young children, pregnant patients, and people with certain chronic conditions.
Prescription antiviral medications may also be used for influenza in some situations. Timing matters, so it is worth contacting a provider early if you think you have the flu and are at higher risk for complications.
Symptoms can also overlap with COVID-19 and other respiratory illnesses. If you are unsure what you have, find a Make You Well location and check the same-day care options available near you.
When to Get Tested or See a Provider
Consider a medical evaluation if symptoms are severe, you are at higher risk for complications, you are getting worse instead of better, or knowing whether you have flu or another infection would change your treatment plan.
Seek urgent medical care for difficulty breathing, persistent chest pain or pressure, confusion, severe weakness, signs of dehydration, or other concerning symptoms.
Frequently Asked Questions
Can you have the flu without a fever?
Yes. Fever is common with influenza, but some people with flu never develop one.
Is a stuffy nose more common with a cold or the flu?
Nasal congestion is especially common with colds, but it can occur with flu and other respiratory infections too.
Can symptoms alone confirm whether I have the flu?
No. Symptoms can strongly suggest flu, but testing may be needed when a confirmed diagnosis matters.
Feeling Sick? Get the Right Next Step
You do not have to diagnose yourself from a symptom checklist. Schedule a visit with Make You Well to talk with a provider about your symptoms and the right next step.