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The cause of allergic conjunctivitis is an allergic reaction of the body's immune system to an allergen. Allergic conjunctivitis is common in people who have other signs of allergic disease such as hay fever, asthma and eczema. [citation needed] Among the most common allergens that cause conjunctivitis are: [5] Pollen from trees, grass and ragweed
Allergic conjunctivitis is inflammation of the conjunctiva due to allergy. [10] The specific allergens may differ among patients. Symptoms result from the release of histamine and other active substances by mast cells , and consist of redness (mainly due to vasodilation of the peripheral small blood vessels), swelling of the conjunctiva ...
Acute hemorrhagic conjunctivitis (AHC) (also spelled acute haemorrhagic conjunctivitis) is a derivative of the highly contagious conjunctivitis virus, [1] otherwise known as pink eye. Symptoms include excessively red, swollen eyes as well as subconjunctival hemorrhaging. Currently, there is no known treatment and patients are required to merely ...
Pink eye can result from a viral infection, a bacterial infection, a chemical (toxin) irritation, or from allergies. "Viral conjunctivitis is worse in the fall and winter," says Dr. John Epling, a ...
Vernal keratoconjunctivitis (VKC, also Spring catarrh, Vernal catarrh or Warm weather conjunctivitis) is a recurrent, bilateral, and self-limiting type of conjunctivitis (pink eye) having a periodic seasonal incidence.
Keratoconjunctivitis is frequently caused by viral infections in and around the eyes. A particularly common cause of this is the herpes simplex virus.In some people, the infection may become chronic and keratoconjunctivitis may present during flare-ups of variable frequency.
It is usually caused by allergies or viral infections, often inciting excessive eye rubbing. Chemosis is also included in the Chandler Classification system of orbital infections. If chemosis has occurred due to excessive rubbing of the eye, the first aid to be given is a cold water wash for eyes. [citation needed] Other causes of chemosis include:
The wreckage of a Delta Air Lines-operated CRJ900 aircraft lays on the runway after a plane crash at Toronto Pearson International Airport. - Cole Burston/Reuters
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related to: eyewiki allergic conjunctivitis