A runny nose may be a symptom of a cold, allergy, or sinus infection
(sinusitis). Occasionally an object in the nose causes
the nose to run.
Colds
A runny nose from a cold is often accompanied by a low fever,
cough, and a scratchy throat. Nasal drainage usually is clear but may change to
yellow as the cold goes away. If you seem to be getting better, the color of
the drainage is not a concern.
Allergies
Drainage from a runny nose caused by allergies is usually clear.
Your nose may itch. Sneezing and watery eyes may also be present. In addition,
you may have dark circles under your eyes ("allergic shiners").
Sinus infection
A runny nose with thick drainage that isn't getting better after 10
days or a very thick yellow drainage when you also have fever can be a sign of
sinus infection (sinusitis). You may also have pain in the forehead or cheek
bones, a cough, and an upset stomach when a sinus infection is present.
