example 5 use the result of example 3 to find the average rate of change of from 3 to 0 the average rate of change of from 3 to 0 is a 0 3 3 1 a difference quotient can also be used to define a function that allows us to determine the average rate of change
This is called post-nasal drip. When this happens, individuals will feel chest pain and other symptoms of chest congestion aside from the allergy symptoms. Treatment of chest congestion caused by seasonal allergies is related to the treatment of the allergy.
It's a different story with allergies. They're caused by an overactive immune system. For some reason, your body mistakes harmless things, such as dust or pollen, for germs and attacks them. When that happens, your body releases chemicals such as histamine, just as it does when fighting a cold. This can cause a swelling in the passageways of your nose, and you'll start sneezing and coughing. Unlike colds, allergies aren't contagious, though some people may inherit a tendency to get them.