Differential Diagnosis for Redness Rimming Both Eyes
- Single Most Likely Diagnosis
- Allergic conjunctivitis: This is a common condition characterized by inflammation of the conjunctiva due to an allergic reaction, often to pollen, dust, or other environmental allergens. The redness and itching associated with allergic conjunctivitis can rim both eyes, making it a likely cause for the symptoms described.
- Other Likely Diagnoses
- Viral conjunctivitis: This highly contagious infection can cause redness, itching, and discharge in both eyes. It's often accompanied by a watery discharge and can be spread through direct contact with an infected person.
- Blepharitis: Inflammation of the eyelids can cause redness, itching, and swelling, which may appear as redness rimming the eyes. It's often associated with poor eyelid hygiene or conditions like rosacea.
- Dry eye syndrome: This condition, characterized by insufficient tear production or poor tear quality, can lead to redness, irritation, and a sensation of grittiness in both eyes.
- Do Not Miss Diagnoses
- Acute angle-closure glaucoma: Although less common, this is a medical emergency that can cause severe eye pain, redness, blurred vision, and nausea. It occurs when the drainage channels in the eye are suddenly blocked, leading to a rapid increase in intraocular pressure.
- Orbital cellulitis: A serious infection of the tissues surrounding the eye, which can cause redness, swelling, pain, and decreased eye movement. It requires prompt medical attention to prevent serious complications.
- Sjögren's syndrome: An autoimmune disorder that can cause dry eyes and mouth, among other symptoms. While not immediately life-threatening, it can significantly impact quality of life and requires proper management.
- Rare Diagnoses
- Sarcoidosis: A condition in which inflammatory cells form lumps known as granulomas in various parts of the body, including the eyes. Ocular sarcoidosis can cause uveitis, conjunctivitis, and other eye symptoms.
- Stevens-Johnson syndrome: A rare but serious disorder of the skin and mucous membranes, often triggered by an infection or medication. It can cause severe conjunctivitis and corneal ulcers, among other symptoms.
- Relapsing polychondritis: An autoimmune disorder that can cause inflammation in various cartilaginous structures, including the eyes. It may lead to conjunctivitis, scleritis, and other ocular symptoms.