Thu February 23, 2012 By: Lakshyajeet Gogoi

How is cold formed? Why do our nose get blocked when we get cold?

Expert Reply
Meghna Thapar
Fri February 24, 2012
Rhinovirus infects only a small proportion of the cells lining the nose. Inflammatory mediators cause dilatation and leakage of blood vessels and mucus gland secretion. They also activate sneeze and cough reflexes and stimulate pain nerve fibers.      
When the tissues in the membrane become swollen, it blocks the normal passage of fluid through your nasal pathways.
Home Work Help