Allergic conjunctivitis: Difference between revisions

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=Clinical Features=
==Background==
#Itching
*Conjunctivitis due to exposure to an allergen
#Watery discharge
*Chronic allergic conjunctivitis is also called vernal conjunctivitis
#Injected and edematous conjunctiva
#Papillae on inferior conjunctival fornix
#Red, swollen eyelids


=Treatment=
==Clinical Features==
#Mild: avoid triggers, cool compresses x 15 minutes QID
[[File:PMC4396420 opth-9-575Fig1.png|thumb|Bilateral allergic contact dermatitis caused by eyedrops (left) and after resolution (right).]]
#Moderate: Histamine-blocking drops (e.g. olopatadine, pemirolast, or ketotifen)
[[File:PMC3640929 1824-7288-39-18-1.png|thumb|Seasonal allergic conjunctivitis. Inverted eyelid showing mild conjunctival injection and moderate chemosis.]]
#Severe: referral to opthalmology for possible steroid therapy
[[File:PMC3047907 jaa-3-149f1.png|thumb|Acute allergic conjunctivitis.]]
[[File:PMC3047907 jaa-3-149f2.png|thumb|Chronic allergic conjunctivitis.]]
[[File:PMC3047907 jaa-3-149f8.png|thumb|Contact allergic blepharoconjunctivitis (from eyedrops).]]
*Itching
*Watery discharge
*Injected and [[red eye|edematous conjunctiva]]
*Papillae on inferior conjunctival fornix
*Red, swollen eyelids


=Disposition=
==Differential Diagnosis==
*Outpatient ophthalmology follow-up
{{Conjunctivitis DDX}}


=See Also=
==Evaluation==
{{Clinical diagnosis of conjunctivitis}}
 
==Management==
*'''Mild''': avoid triggers, cool compresses for 15 minutes QID
*'''Moderate''': Histamine-blocking drops (e.g. naphazoline/pheniramine 0.025%/0.3%, olopatadine, pemirolast, or ketotifen)
*'''Severe''': refer to ophthalmology for possible [[Steroids|steroid]] therapy
 
==Disposition==
*Discharge with ophthalmology follow-up
 
==See Also==
*[[Conjunctivitis]]
*[[Conjunctivitis]]
*[[Eye Algorithm (Main)]]
*[[Eye Algorithms (Main)]]


=Source=
==References==
*Mahmood, Narang. Diagnosis and management of acute red eye. Emerg Med Clin N Am 2008;26
<references/>
*Tintinalli


[[Category:Ophtho]]
[[Category:Ophthalmology]]

Latest revision as of 16:40, 12 March 2021

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. naphazoline/pheniramine 0.025%/0.3%, olopatadine, pemirolast, or ketotifen)
  • Severe: refer to ophthalmology for possible steroid therapy

Disposition

  • Discharge with ophthalmology follow-up

See Also

References