Symptoms of a cold can be felt about 1-4 days after catching a cold virus. They start with a burning feeling in the nose or throat, followed by sneezing, a runny nose, and a feeling of being tired and unwell. This is the period when you are most contagious — you can pass the cold to others — so it’s best to stay home and rest.
For the first few days, the nose teems with watery nasal secretions. Later, these become thicker and yellower or greener. You may get a mild cough. It won’t get much worse, but it is likely to last into the second week of your illness. If you suffer from chronic bronchitis or asthma, a cold will make it worse.
Because the common cold weakens your immune system, it can increase the risk of a bacterial super infection of your sinuses, inner ear or lungs. Community acquired pneumonias can start as a common cold. If symptoms get worse, rather than better, after 3-7 days, you may have acquired a bacterial infection. These symptoms can also be caused by a cold virus other than a rhinovirus.
Usually there is no fever; in fact, fever and more severe symptoms may indicate that you have the flu rather than a cold.
Cold symptoms typically last for about 3 days. At that point the worst is over, but you may feel congested for a week or more.
Except in newborns, colds themselves are not dangerous. They usually go away in 4 to 10 days without any special medicine. Unfortunately, colds do wear down your body’s resistance, making you more susceptible to bacterial infections.
If your cold is nasty enough, seek medical attention. Your doctor likely will examine your throat, lungs, and ears. If your doctor suspects strep throat, he will take a culture and determine if you have an infection and may need antibiotics. If he suspects pneumonia, you will need a chest X-ray.
National Institute of Allergy and Infectious Diseases: “Common Cold.”
Palo Alto Medical Foundation: “The Common Cold.”
University of Virginia health System: “Upper Respiratory Infection (URI or Common Cold).”
National Jewish Medical and Research Center: “Getting Well When You Have a Cold or the Flu.”
Medline Plus: “Common Cold.”
FDA: “Colds and Flu: Time only Sure Cure.”
American Lung Association: “A Survival Guide for Preventing and Treating Influenza and the Common Cold.”
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Understanding Common Cold — Symptoms
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