Difference between revisions of "Allergic conjunctivitis"

(Background)
(Clinical Features)
 
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==Background==
 
==Background==
 +
*Conjunctivitis due to exposure to an allergen
 
*Chronic allergic conjunctivitis is also called vernal conjunctivitis
 
*Chronic allergic conjunctivitis is also called vernal conjunctivitis
  
 
==Clinical Features==
 
==Clinical Features==
 +
[[File:PMC4396420 opth-9-575Fig1.png|thumb|Bilateral allergic contact dermatitis caused by eyedrops (left) and after resolution (right).]]
 +
[[File:PMC3640929 1824-7288-39-18-1.png|thumb|Seasonal allergic conjunctivitis. Inverted eyelid showing mild conjunctival injection and moderate chemosis.]]
 +
[[File:PMC3047907 jaa-3-149f1.png|thumb|Acute allergic conjunctivitis.]]
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[[File:PMC3047907 jaa-3-149f2.png|thumb|Chronic allergic conjunctivitis.]]
 +
[[File:PMC3047907 jaa-3-149f8.png|thumb|Contact allergic blepharoconjunctivitis (from eyedrops).]]
 
*Itching
 
*Itching
 
*Watery discharge
 
*Watery discharge
*Injected and edematous conjunctiva
+
*Injected and [[red eye|edematous conjunctiva]]
 
*Papillae on inferior conjunctival fornix
 
*Papillae on inferior conjunctival fornix
 
*Red, swollen eyelids
 
*Red, swollen eyelids
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==Management==
 
==Management==
*Mild: avoid triggers, cool compresses x 15 minutes QID
+
*'''Mild''': avoid triggers, cool compresses for 15 minutes QID
*Moderate: Histamine-blocking drops (e.g. olopatadine, pemirolast, or ketotifen)
+
*'''Moderate''': Histamine-blocking drops (e.g. olopatadine, pemirolast, or ketotifen)
*Severe: referral to ophthalmology for possible [[Steroids|steroid]] therapy
+
*'''Severe''': refer to ophthalmology for possible [[Steroids|steroid]] therapy
  
 
==Disposition==
 
==Disposition==
*Outpatient ophthalmology follow-up
+
*Discharge with ophthalmology follow-up
  
 
==See Also==
 
==See Also==
 
*[[Conjunctivitis]]
 
*[[Conjunctivitis]]
*[[Eye Algorithm (Main)]]
+
*[[Eye Algorithms (Main)]]
  
 
==References==
 
==References==
*Mahmood, Narang. Diagnosis and management of acute red eye. Emerg Med Clin N Am 2008;26
+
<references/>
  
 
[[Category:Ophthalmology]]
 
[[Category:Ophthalmology]]

Latest revision as of 18:15, 26 September 2020

Background

  • Conjunctivitis due to exposure to an allergen
  • Chronic allergic conjunctivitis is also called vernal conjunctivitis

Clinical Features

Bilateral allergic contact dermatitis caused by eyedrops (left) and after resolution (right).
Seasonal allergic conjunctivitis. Inverted eyelid showing mild conjunctival injection and moderate chemosis.
Acute allergic conjunctivitis.
Chronic allergic conjunctivitis.
Contact allergic blepharoconjunctivitis (from eyedrops).
  • Itching
  • Watery discharge
  • Injected and edematous conjunctiva
  • Papillae on inferior conjunctival fornix
  • Red, swollen eyelids

Differential Diagnosis

Conjunctivitis Types

Evaluation

Clinical diagnosis of conjunctivitis

Conjunctivitis
Bacterial Viral Allergic
Bilateral 50% 25% Mostly
Discharge Mucopurulent Clear, Watery Cobblestoning, none
Redness Yes Yes Yes
Pruritis Rarely Rarely Yes
Additional Treatment: Antibiotics Treatment: Hygiene Seasonal

Management

  • Mild: avoid triggers, cool compresses for 15 minutes QID
  • Moderate: Histamine-blocking drops (e.g. olopatadine, pemirolast, or ketotifen)
  • Severe: refer to ophthalmology for possible steroid therapy

Disposition

  • Discharge with ophthalmology follow-up

See Also

References