The common cold is a viral infection of your nose and throat. Cold weather does not cause it, but it does help the virus spread more easily.
Understanding that difference matters. Once you know how the common cold actually spreads, you can protect yourself without avoiding fresh air or outdoor exercise.
Does cold weather cause the common cold?
No. Though the common cold usually occurs in the fall and winter months, the cold weather itself does not cause the common cold. Rather, it is thought that during cold-weather months people spend more time indoors in close proximity to each other, thus facilitating the spread of the virus.
For this same reason, children in day care and school are particularly prone to acquiring the common cold.
Why are colds more common in winter?
Three things line up in winter: people gather indoors where viruses spread easily, indoor air is drier, and the viruses that cause colds survive better at lower humidity.
Dry air also dries your nasal passages, which makes it easier for a virus to take hold once it reaches you.
How does the common cold spread?
Colds spread mainly through droplets in the air when a sick person coughs or sneezes, and through your hands. If you touch a surface that has the virus on it and then touch your eyes, nose, or mouth, you can infect yourself.
That is why handwashing matters more than avoiding the cold outdoors.
What are the most common cold symptoms?
- Runny or stuffy nose
- Sneezing and sore throat
- Mild cough
- Feeling tired or achy
- Low-grade fever, more often in children
Cold symptoms usually build up over one or two days and ease within a week.
How can you prevent a cold?
Wash your hands often with soap and water, especially after being around someone who is sick. Avoid touching your face, keep your distance from people who are coughing, and clean shared surfaces such as phones and door handles.
Getting enough sleep, eating well, and staying hydrated also help your body fight off infection.
When should you see a doctor for a cold?
See a doctor if symptoms last more than 10 days, if you have a fever above 101 degrees Fahrenheit that will not go away, or if you have trouble breathing, chest pain, or severe sinus pain.
Our primary care team at The Vine Medical Center can check whether your symptoms are a cold, the flu, or something that needs treatment.
Can you treat a common cold with medicine?
There is no cure for a common cold, and antibiotics do not help because colds come from viruses. What you can do is ease the symptoms while your body clears the infection on its own.
Rest, fluids, and time do most of the work. A saline nasal spray, a humidifier, and warm drinks can loosen a stuffy nose. Over-the-counter cold medicines may help adults feel better, but they do not shorten the illness, and they should not be given to young children without a doctor’s advice.
How long is a cold contagious?
You are most contagious in the first few days, when your symptoms are at their worst. A common cold can still spread for up to two weeks, even after you start to feel better.
Because of that, handwashing and covering coughs matter even when you are nearly recovered. If you must be around others, keep your hands away from your face and clean shared surfaces, such as phones and light switches.
How can you tell a cold from allergies?
Both cause a runny nose and sneezing, so they can look alike. Allergies usually bring itchy, watery eyes and start quickly when you are near a trigger such as pollen or pet dander. A common cold tends to build over a day or two and often includes a sore throat.
Fever also points away from allergies. A low-grade fever is common with a cold, especially in children, but it is not a typical allergy symptom.
Does a common cold affect children differently?
Children catch colds more often than adults, partly because they are around other children and have not built up immunity yet. Symptoms such as a low-grade fever are also more common in children.
Call a doctor if a child is breathing fast, is not drinking, is unusually sleepy, or has a fever that lasts more than a few days. Those signs need a closer look rather than more time at home.
What helps a cold clear faster at home?
- Sleep more than usual, and rest when you feel tired.
- Drink water, broth, or warm tea throughout the day.
- Use a cool-mist humidifier or take a steamy shower to ease congestion.
- Gargle warm salt water for a sore throat.
- Stay home while you are most contagious, so you do not pass the virus on.
None of these shorten a cold, but they make the days easier and help you avoid spreading it to the people around you.
When should you visit urgent care for a cold?
Most colds do not need a visit. Come in if symptoms last more than 10 days, if they seem to improve and then get worse, or if you have a high fever, chest pain, or trouble breathing.
Our urgent care team can check your symptoms the same day and tell you whether you have a cold, the flu, or an infection that needs treatment. If you are due for protection against influenza, our flu shot clinics make it easy to get vaccinated, and you can read about what flu shot side effects to expect beforehand.
Can a cold turn into a sinus infection?
Sometimes it can. When a cold blocks the small passages in your sinuses, fluid can sit there and allow bacteria to grow, which leads to a sinus infection.
Watch for symptoms that improve and then get worse, pressure around your eyes or cheeks, or a fever that returns. That pattern deserves a same-day check, because it points to more than a cold.
Frequently asked questions
Can you catch a cold from being cold?
No. Cold temperatures do not give you a cold. You catch a cold by picking up a virus, usually from another person or from a contaminated surface.
How long does a common cold last?
Most colds improve within 7 to 10 days. A lingering cough can last a little longer, but it should steadily ease.
Is the common cold the same as the flu?
No. The flu usually comes on faster and causes a higher fever and more body aches. Colds are milder and build up more slowly.
Should I take antibiotics for a cold?
No. Antibiotics treat bacteria, and colds are caused by viruses. They will not help, and they can cause side effects.
