Young woman sneezing and blowing her nose, using a tissue. She may be sick or suffers from allergies.

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An allergy is an abnormal reaction or increased sensitivity to certain substances. The allergic individual produces symptoms when exposed to these substances which are harmless to non allergic people. The main reason for this is that allergic people make a special type of antibody called immunoglobulin e ige which can react with environmental substances in a harmful way. These substances are called allergens.

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Size: 3345px × 5017px
Location: Chicago IL USA
Photo credit: © Custom Medical Stock Photo / Alamy / Afripics
License: Royalty Free
Model Released: Yes

Keywords: 522-1543, allergen, allergies, allergy, blow, blowing, cmsp, cold, common, cough, female, fever, flu, free, girl, ill, illness, influenza, royalty, runny, sick, sneeze, sneezes, sneezing, tissue, woman