Differential Diagnosis for Bloodshot Eyes
- Single most likely diagnosis
- Conjunctivitis: This is the most common cause of bloodshot eyes, often due to viral or bacterial infections, or allergic reactions. It's characterized by redness, itching, and discharge.
- Other Likely diagnoses
- Dry eye syndrome: Insufficient tear production or poor tear quality can lead to eye irritation and redness.
- Eye strain: Prolonged use of computers, reading, or other visually demanding tasks can cause fatigue and redness in the eyes.
- Allergies: Seasonal or environmental allergies can cause bloodshot eyes due to inflammation and irritation.
- Contact lens-related issues: Poorly fitted lenses, lens hygiene issues, or sensitivity to lens cleaning solutions can lead to eye redness.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Acute angle-closure glaucoma: A medical emergency characterized by sudden, severe eye pain, redness, and vision loss. If left untreated, it can lead to permanent vision loss.
- Endophthalmitis: A rare but potentially devastating infection within the eye that requires prompt treatment to prevent vision loss.
- Orbital cellulitis: A bacterial infection of the tissues surrounding the eye, which can lead to serious complications if not treated promptly.
- Rare diagnoses
- Sjögren's syndrome: An autoimmune disorder that can cause dry eyes and other systemic symptoms.
- Sarcoidosis: A condition that can cause inflammation in various parts of the body, including the eyes, leading to redness and vision problems.
- Wegener's granulomatosis: A rare autoimmune disorder that can cause bloodshot eyes, among other symptoms, due to inflammation of blood vessels.