Parents often wonder: Is my child’s runny nose just a cold — or could it be a sinus infection? The two can look very similar at first, but there are key differences in cause, duration, and treatment. Understanding these differences helps families know when to provide comfort care at home and when to call the pediatrician.
What Is the Common Cold?
The common cold is a viral infection of the upper respiratory tract. It is caused by viruses such as rhinovirus, coronavirus, or adenovirus.
Key facts about colds in children:
- Very common — children may get 6 to 8 colds per year, especially in early school years.
- Spread through coughs, sneezes, or touching contaminated surfaces.
- Typically mild and self-limiting — most colds resolve on their own in 7 to 10 days.
Typical symptoms of a cold:
- Runny or stuffy nose (clear or slightly colored mucus)
- Sneezing
- Mild sore throat
- Cough
- Low-grade fever (sometimes, especially in young children)
- Fatigue or fussiness
Colds usually improve gradually without specific treatment beyond comfort care.
What Is a Sinus Infection (Sinusitis)?
A sinus infection occurs when the sinuses—air-filled spaces in the face—become inflamed and infected. In children, sinus infections often follow a cold, since viral congestion blocks normal drainage and allows bacteria to grow.
Types of sinus infections in pediatrics:
- Acute viral sinusitis: Congestion from a viral illness; symptoms typically improve within 10 days.
- Acute bacterial sinusitis: Bacterial overgrowth in the sinuses, usually suspected when symptoms persist longer than 10 days without improvement, worsen after initial improvement, or are unusually severe.
Typical symptoms of a sinus infection:
- Nasal congestion lasting more than 10 days without improvement
- Thick yellow or green nasal discharge (though color alone doesn’t prove bacterial infection)
- Cough (often worse at night)
- Facial pain or pressure (older children may describe this)
- Headache (in school-age children and teens)
- Fever—higher (>102°F/39°C) or lasting longer than with a typical cold
- Bad breath
How to Tell Them Apart
Feature | Cold | Sinus Infection |
Cause | Viruses | Often bacterial (sometimes viral) |
Onset | Gradual, mild symptoms | May follow a cold, then worsen or persist |
Duration | Improves in 7–10 days | Lasts >10 days without improvement, or worsens after initial improvement |
Fever | Low-grade, short-lived | Higher or longer-lasting |
Nasal Discharge | Clear → cloudy; improves over time | Thick, persistent; may worsen |
Cough | Mild, improves gradually | Often worse at night, lingers |
Treatment | Comfort care, fluids, rest | Sometimes antibiotics (if bacterial and severe/persistent) |
When to Call the Pediatrician
Parents should contact their pediatrician if:
- Cold symptoms last longer than 10 days without improvement.
- Symptoms worsen after a child initially starts to get better.
- Fever is high (over 102°F/39°C) or persistent.
- Facial swelling, severe headache, vision changes, or significant pain develops (rare but urgent).
- A child has recurrent sinus infections or underlying conditions such as asthma.
Treatment Approaches
For a Cold:
- Rest and fluids to support recovery.
- Saline nasal spray or drops to ease congestion.
- Cool-mist humidifier in the bedroom.
- Acetaminophen or ibuprofen for fever or discomfort (if age-appropriate).
- Honey (for children over 1 year old) may soothe cough.
- Antibiotics are not used — since colds are viral.
For a Sinus Infection:
- Mild cases may still improve without antibiotics — supportive care is important.
- Antibiotics may be prescribed if:
- Symptoms persist beyond 10 days,
- Symptoms worsen after initial improvement, or
- Severe symptoms (fever, facial pain, swelling) occur.
- Symptoms persist beyond 10 days,
- The pediatrician will decide based on AAP (American Academy of Pediatrics) and CDC guidelines.
Key Takeaways for Families
- Most runny noses in children are caused by the common cold, not sinus infections.
- Time is the best clue — colds get better in about a week, while bacterial sinus infections linger or worsen.
- Antibiotics are only needed for bacterial sinus infections, not for colds.
- If you’re uncertain, especially if your child is uncomfortable or symptoms are not improving, check with your pediatrician.
In short, colds and sinus infections share symptoms, but duration, severity, and progression help distinguish them. When in doubt, your pediatrician is the best resource to guide diagnosis and treatment. To schedule an appointment with one of our Board-Certified pediatricians, call our office at (404) 252-4611 or conveniently request a visit via our ‘Contact Us’ form at the bottom of our homepage.