In most cases, you will know when you have a cold from the symptoms.
When to seek medical advice
A visit to your GP is usually only necessary if:
- your symptoms persist for more than 14 days
- you have a high temperature (fever) of or above 39°C (102.2°F)
- you cough up blood-stained phlegm (thick mucus)
- you feel chest pain
- you have breathing difficulties
- you experience severe swelling of your lymph nodes (glands) in your neck and/or armpits
If you're concerned about your baby or an elderly person, or you have a long-term illness, such as a chest condition, arrange to see your GP. Alternatively, you can phone NHS Direct on 0845 4647, for an assessment.
In these circumstances your GP may carry out tests to make sure that your symptoms aren't being caused by another type of infection that may be more serious, such as pneumonia (a bacterial infection of the lungs) or glandular fever (a viral infection caused by the Epstein-Barr virus).
These tests may include:
- blood tests
- chest X-rays
- taking a sample of tissue from your throat using a swab (a small cotton bud with a plastic loop at the end), which is then checked for the presence of bacteria
