Allergic conjunctivitis is an inflammatory response of the conjunctiva to an allergen. It is part of a larger systemic atopic reaction and is usually seasonal with associated upper respiratory tract symptoms and complaints of redness and swelling of the conjunctiva with severe itching and increased lacrimation.
What is atopic conjunctivitis?
Perennial allergic conjunctivitis (atopic conjunctivitis, atopic keratoconjunctivitis) is caused by dust mites, animal dander, and other nonseasonal allergens. These allergens, particularly those in the home, tend to cause symptoms year-round.
What is the difference between allergic conjunctivitis and viral conjunctivitis?
Infection vs. allergies. It can be difficult to tell whether you have the bacterial or viral pink eye or the kind caused by allergies or other irritants. But it’s an important distinction to make because bacterial and viral pink eye is highly contagious, while allergic pink eye is not.
What is the difference between conjunctivitis and allergies?
A child suffering from allergic conjunctivitis may experience redness, swollen eyelids, an increased number of tears, itchy eyes and blurred vision; however, allergies are not going to produce the same kind of discharge or crusting that is a hallmark of an actual eye infection.
What is allergic conjunctivitis of the eyes?
Allergic conjunctivitis is inflammation of the conjunctiva, which is the tissue that covers the inside of eyelids, as well as the white part of the eyeball. Sezen Karakus, M.D., an ophthalmologist from the Wilmer Eye Institute, Johns Hopkins Medicine, shares what you need to know about allergic conjunctivitis.
What is perennial allergic conjunctivitis?
Perennial allergic conjunctivitis (PAC) is an inflammatory response of the conjunctiva triggered by exposure to allergens such as pollens, animal dander (flecks of dead skin cells and hair/feathers) and other environmental antigens.
What is Phlyctenular conjunctivitis?
(Phlyctenular Conjunctivitis; Phlyctenulosis)
Phlyctenular keratoconjunctivitis, a hypersensitivity reaction of the cornea and conjunctiva to bacterial antigens, is characterized by discrete nodular areas of corneal or conjunctival inflammation.
What does allergic conjunctivitis look like?
Symptoms of allergic conjunctivitis include: Red or pink eyes: The eyes become irritated as the capillaries, or small blood vessels, widen in the conjunctiva. Pain: This may affect one or both eyes. If a person has painful, red eyes, is sensitive to light, and their vision is affected, they should see a doctor at once.
What is the best treatment for allergic conjunctivitis?
Allergic conjunctivitis can be treated with a variety of medications, including topical antihistamines, mast cell stabilizers, nonsteroidal anti-inflammatory drugs (NSAIDs), and corticosteroids. Surgical intervention may be indicated in severe cases of VKC or AKC.
How can you tell if conjunctivitis is viral or bacterial?
Viral conjunctivitis usually lasts longer than bacterial conjunctivitis. If conjunctivitis does not resolve with antibiotics after 3 to 4 days, the physician should suspect that the infection is viral. Bacterial conjunctivitis is characterized by mucopurulent discharge with matting of the eyelids.
Do allergies cause eye discharge?
Allergies. Eye allergies, or allergic conjunctivitis, is an immune response that occurs when your eye is irritated by allergens such as pollen or dust. This form of conjunctivitis can affect one or both eyes, and may also be accompanied by congestion and eye discharge.
How long does it take to get rid of allergic conjunctivitis?
Pink eye caused by bacteria will take about 24–48 hours before symptoms improve once a person is on antibiotics. Pink eye caused by a virus takes anywhere from a few days to more than a week to resolve. Pink eye that results from an allergy will normally clear as the other allergy symptoms lessen.
How long does conjunctivitis last?
The infection will usually clear up in 7 to 14 days without treatment and without any long-term consequences. However, in some cases, viral conjunctivitis can take 2 to 3 weeks or more to clear up. A doctor can prescribe antiviral medication to treat more serious forms of conjunctivitis.
How do you get allergic conjunctivitis?
Allergic conjunctivitis is an eye inflammation caused by an allergic reaction to substances like pollen or mold spores. The inside of your eyelids and the covering of your eyeball have a membrane called the conjunctiva. The conjunctiva is susceptible to irritation from allergens, especially during hay fever season.
Is allergic conjunctivitis serious?
Like all types of pink eye, allergic conjunctivitis is common but not usually serious. Allergic conjunctivitis usually affects both eyes. The main symptoms include: Pinkness or redness of the eyes.
Will Benadryl help allergic conjunctivitis?
Antihistamine pills and liquids work by blocking histamine to relieve watery, itchy eyes. They include cetirizine (Zyrtec), diphenhydramine (Benadryl), fexofenadine (Allegra), or loratadine (Alavert, Claritin), among others. Some may cause drowsiness. Antihistamine eye drops work well for itchy, watery eyes.