ALLERGIES
Allergies are an overreaction of the immune system. People who have
allergies have a hyper-alert immune system that overreacts to a
substance in the environment called an allergen. Exposure to what
is normally a harmless substance, such as pollen, causes the immune
system to react as if the substance is harmful.
Symptoms include:
Coughing
Difficulty Breathing
Hives
Itchy Eyes
Itchy Skin
Rash
Runny Nose
Sneezing
Stuffy Nose
Watery eyes