Differential Diagnosis for 13F with Photophobia, Itchy Eyes, and No Vision Change
- Single Most Likely Diagnosis
- Allergic conjunctivitis: This is the most likely diagnosis given the symptoms of itchy eyes and photophobia without any vision changes. Allergic conjunctivitis is a common condition, especially in young individuals, and is often associated with seasonal allergies or environmental allergens.
- Other Likely Diagnoses
- Dry eye syndrome: This condition can cause discomfort, itchiness, and photophobia, especially if the eyes are not producing enough tears or if the tears are of poor quality.
- Blepharitis: Inflammation of the eyelids can lead to itchy, irritated eyes and photophobia. It's a common condition that can be associated with skin conditions like acne or rosacea.
- Viral conjunctivitis: Although typically associated with a red, watery eye, some viral conjunctivitis cases can present with itchiness and photophobia, especially in the early stages.
- Do Not Miss Diagnoses
- Acute angle-closure glaucoma: Although less likely given the absence of vision changes, this is a medical emergency that can present with severe eye pain, photophobia, and blurred vision. It's crucial to rule out this condition due to its potential for permanent vision loss.
- Uveitis: Inflammation of the uvea can cause photophobia, eye pain, and vision changes, but some forms may present with minimal symptoms initially. Missing this diagnosis can lead to complications like cataracts, glaucoma, or vision loss.
- Rare Diagnoses
- Sjögren's syndrome: An autoimmune disorder that can cause dry eyes and mouth. While it's less common, especially in a 13-year-old, it's a consideration in chronic cases without a clear allergic or infectious cause.
- Ocular rosacea: A condition associated with rosacea of the skin, which can cause eye irritation, itchiness, and photophobia. It's less common in young teenagers but should be considered if there's a history of skin rosacea.