Allergic conjunctivitis

 

Allergic conjunctivitis

Definition

Conjunctivitis is an inflammation of the conjunctiva.

There are two types of allergic conjunctivitis:

  • The Seasonal allergic conjunctivitis: acute conjunctivitis.
  • The Perennial allergic conjunctivitis: chronic conjunctivitis. 

 

Organ

The conjunctiva is the thin covering (like a very thin skin) that covers the white part of the eyes and the inside of the eyelids.

 

Symptoms

Symptoms of allergic pink eye include:

  • Redness in the white of the eye or inner eyelid
  • Increased amount of tears
  • Itchy eyes
  • Blurred vision
  • Swelling of the eyelid

In allergic conjunctivitis, these symptoms are usually present in both eyes (not always equally).

Source : WebMD

 

Frequency

People who have allergies are more likely to develop allergic conjunctivitis. According to the Asthma and Allergy Foundation of America, allergies affect 30 percent of adults and 40 percent of children, and often run in families.

Allergies affect people of all ages, though they are more common in children and young adults. If you have allergies and live in locations with high pollen counts, you are more susceptible to allergic conjunctivitis.

Source : HealthLine

 

Causes

Allergic conjunctivitis is caused by allergens in the environment, animal dander, pollen, dust mites ...

 

Evolution

Seasonal and perennial conjunctivitis can be unpleasant, but complications are rare. Contact dermatoconjunctivitis and giant papillary conjunctivitis occasionally cause inflammation and ulceration of the cornea (keratitis). Some permanent loss of vision may occur if these are left untreated.

Source : Patient

 

Prevention

Completely avoiding the environmental factors that cause allergic conjunctivitis can be difficult. The best thing you can do is to limit your exposure to these triggers. For example, if you know that you are allergic to perfume or household dust, you can try to minimize your exposure by using scent-free soaps and detergents. You may also consider installing an air purifier in your home. 

Source : HealthLine

 

Diagnosis

A good GP (general practitioner, primary care physician) should be able to diagnose allergic conjunctivitis by examining the patient and assessing signs and symptoms. Signs are what the doctor can see (e.g. red eye), symptoms are what the patient describes to the doctor (e.g. pain). The doctor will ask about other symptoms, such as sneezing and blocked/runny nose.

The GP will also need to rule out any other conditions which present similar symptoms.

Source : Medical News Today 

 

Treatment

In more troublesome cases, home care may not be adequate. You will need to see a doctor who might recommend the following options:

  • an oral or over-the-counter antihistamine to reduce or block histamine release
  • anti-inflammatory or anti-inflammation eye drops
  • eye drops to shrink congested blood vessels
  • steroid eye drops

Source : Health Line 

 

Images

Allergic conjunctivitis with conjunctival swelling

Allergicconjunctivitis

SourceBy James Heilman, MD (Own work) [CC BY-SA 4.0], via Wikimedia Commons

 

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