Allergic conjunctivitis history and symptoms: Difference between revisions
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Revision as of 20:20, 29 July 2020
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Allergic conjunctivitis Microchapters |
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Allergic conjunctivitis history and symptoms On the Web |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
The symptoms are due to release of histamine and other active substances by mast cells, which stimulate dilation of blood vessels, irritate nerve endings and increase secretion of tears.
History and Symptoms
The conjunctiva is a thin membrane that covers the eye. When an allergen irritates the conjunctiva, common symptoms that occur in the eye include: ocular itching, eyelid swelling, tearing, photophobia, watery discharge, and foreign body sensation (with pain).[1]
Itching is the most typical symptom of ocular allergy and more than 75% of patients report this symptom when seeking treatment.[1]
Symptoms are usually worse for patients when the weather is warm and dry, whereas cooler temperatures and rain tend to assuage symptoms.
A study by Klein et al. showed that in addition to the physical discomfort allergic conjunctivitis causes, it also alters patients' routines, with patients limiting certain activities such as going outdoors, reading, sleeping, and driving.[1] Therefore, treating patients with allergic conjunctivitis may improve their everyday "quality of life."