Vernal keratoconjunctivitis: Difference between revisions
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{{Infobox medical condition | |||
| name = Vernal keratoconjunctivitis | |||
| image = [[File:Vernal.jpg|alt=Vernal keratoconjunctivitis|upright=1.2]] | |||
| caption = Eye with vernal keratoconjunctivitis | |||
| field = [[Ophthalmology]] | |||
| synonyms = Spring catarrh, warm weather conjunctivitis | |||
| symptoms = [[Itching]], [[redness]], [[tearing]], [[photophobia]], [[discharge]] | |||
| complications = [[Corneal ulcer]], [[vision loss]] | |||
| onset = Typically in [[childhood]] | |||
| duration = [[Chronic condition|Chronic]], often resolves after [[puberty]] | |||
| causes = [[Allergy|Allergic reaction]] | |||
| risks = [[Atopy]], [[family history]] | |||
| diagnosis = [[Clinical diagnosis]], [[slit lamp examination]] | |||
| differential = [[Atopic keratoconjunctivitis]], [[giant papillary conjunctivitis]], [[allergic conjunctivitis]] | |||
| treatment = [[Antihistamines]], [[mast cell stabilizers]], [[topical corticosteroids]] | |||
| frequency = More common in [[tropical]] and [[subtropical]] regions | |||
}} | |||
{{Short description|A chronic allergic eye disease}} | {{Short description|A chronic allergic eye disease}} | ||
'''Vernal keratoconjunctivitis''' (VKC) is a chronic, bilateral inflammation of the conjunctiva and cornea. It is a form of [[allergic conjunctivitis]] that primarily affects children and young adults, particularly males, and is more prevalent in warm, dry climates. | |||
==Signs and Symptoms== | |||
'''Vernal keratoconjunctivitis''' (VKC) is a chronic, bilateral inflammation of the conjunctiva and cornea. It is a | VKC is characterized by intense [[itching]], [[photophobia]], [[tearing]], and a thick, ropy [[discharge]]. Patients often experience a burning sensation and a feeling of a foreign body in the eye. The condition is typically seasonal, with exacerbations in the spring and summer months. | ||
===Conjunctival Changes=== | |||
==Signs and | The conjunctiva may exhibit [[papillae]] on the upper tarsal conjunctiva, which can become large and cobblestone-like. Limbal papillae may also be present, often associated with [[Horner-Trantas dots]], which are collections of degenerated epithelial cells and eosinophils. | ||
===Corneal Involvement=== | |||
Corneal involvement can lead to [[keratitis]], with the potential for [[corneal ulceration]] and [[pannus]] formation. In severe cases, [[shield ulcers]] may develop, which can significantly impact vision. | |||
==Pathophysiology== | ==Pathophysiology== | ||
VKC is an | VKC is an [[IgE]]-mediated hypersensitivity reaction. The condition involves a complex interplay of [[mast cells]], [[eosinophils]], and [[T-lymphocytes]]. The release of inflammatory mediators such as [[histamine]] and [[cytokines]] contributes to the symptoms and tissue changes observed in VKC. | ||
==Diagnosis== | ==Diagnosis== | ||
Diagnosis | Diagnosis is primarily clinical, based on the characteristic signs and symptoms. A detailed patient history and examination of the conjunctiva and cornea are essential. In some cases, conjunctival scrapings may be performed to identify eosinophils. | ||
==Management== | |||
== | Management of VKC involves avoiding known allergens and using pharmacological treatments to control symptoms. [[Topical antihistamines]], [[mast cell stabilizers]], and [[nonsteroidal anti-inflammatory drugs]] (NSAIDs) are commonly used. In more severe cases, [[topical corticosteroids]] or [[immunomodulatory agents]] such as [[cyclosporine]] may be necessary. | ||
Management of VKC involves avoiding allergens and using | |||
==Prognosis== | ==Prognosis== | ||
The prognosis for VKC is generally good, with most patients experiencing a reduction in symptoms as they age. However, | The prognosis for VKC is generally good, with most patients experiencing a reduction in symptoms as they age. However, ongoing management is often required to prevent complications and maintain quality of life. | ||
==See also== | |||
== | |||
* [[Allergic conjunctivitis]] | * [[Allergic conjunctivitis]] | ||
* [[ | * [[Keratitis]] | ||
* [[ | * [[Conjunctivitis]] | ||
* [[Corneal ulcer]] | |||
[[Category:Eye diseases]] | [[Category:Eye diseases]] | ||
[[Category:Allergology]] | [[Category:Allergology]] | ||
Latest revision as of 19:29, 8 April 2025
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Obesity, Sleep & Internal medicine
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| Vernal keratoconjunctivitis | |
|---|---|
| |
| Synonyms | Spring catarrh, warm weather conjunctivitis |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Itching, redness, tearing, photophobia, discharge |
| Complications | Corneal ulcer, vision loss |
| Onset | Typically in childhood |
| Duration | Chronic, often resolves after puberty |
| Types | N/A |
| Causes | Allergic reaction |
| Risks | Atopy, family history |
| Diagnosis | Clinical diagnosis, slit lamp examination |
| Differential diagnosis | Atopic keratoconjunctivitis, giant papillary conjunctivitis, allergic conjunctivitis |
| Prevention | N/A |
| Treatment | Antihistamines, mast cell stabilizers, topical corticosteroids |
| Medication | N/A |
| Prognosis | N/A |
| Frequency | More common in tropical and subtropical regions |
| Deaths | N/A |
A chronic allergic eye disease
Vernal keratoconjunctivitis (VKC) is a chronic, bilateral inflammation of the conjunctiva and cornea. It is a form of allergic conjunctivitis that primarily affects children and young adults, particularly males, and is more prevalent in warm, dry climates.
Signs and Symptoms[edit]
VKC is characterized by intense itching, photophobia, tearing, and a thick, ropy discharge. Patients often experience a burning sensation and a feeling of a foreign body in the eye. The condition is typically seasonal, with exacerbations in the spring and summer months.
Conjunctival Changes[edit]
The conjunctiva may exhibit papillae on the upper tarsal conjunctiva, which can become large and cobblestone-like. Limbal papillae may also be present, often associated with Horner-Trantas dots, which are collections of degenerated epithelial cells and eosinophils.
Corneal Involvement[edit]
Corneal involvement can lead to keratitis, with the potential for corneal ulceration and pannus formation. In severe cases, shield ulcers may develop, which can significantly impact vision.
Pathophysiology[edit]
VKC is an IgE-mediated hypersensitivity reaction. The condition involves a complex interplay of mast cells, eosinophils, and T-lymphocytes. The release of inflammatory mediators such as histamine and cytokines contributes to the symptoms and tissue changes observed in VKC.
Diagnosis[edit]
Diagnosis is primarily clinical, based on the characteristic signs and symptoms. A detailed patient history and examination of the conjunctiva and cornea are essential. In some cases, conjunctival scrapings may be performed to identify eosinophils.
Management[edit]
Management of VKC involves avoiding known allergens and using pharmacological treatments to control symptoms. Topical antihistamines, mast cell stabilizers, and nonsteroidal anti-inflammatory drugs (NSAIDs) are commonly used. In more severe cases, topical corticosteroids or immunomodulatory agents such as cyclosporine may be necessary.
Prognosis[edit]
The prognosis for VKC is generally good, with most patients experiencing a reduction in symptoms as they age. However, ongoing management is often required to prevent complications and maintain quality of life.
