Differential Diagnosis for Eye Discharge, Burning, and Itching
Single Most Likely Diagnosis
- Allergic Conjunctivitis: This is the most likely diagnosis given the symptoms of eye discharge, burning, and itching. Allergic conjunctivitis is a common condition that occurs when the eyes react to an allergen, such as pollen, dust, or pet dander, leading to inflammation and the described symptoms.
Other Likely Diagnoses
- Viral Conjunctivitis: This condition, also known as pink eye, is highly contagious and can cause eye discharge, burning, and itching. It's often accompanied by a red, watery eye and can be caused by viruses such as adenovirus.
- Bacterial Conjunctivitis: Similar to viral conjunctivitis, bacterial conjunctivitis can cause discharge, burning, and itching, but the discharge is typically thicker and more purulent. It's less contagious than viral conjunctivitis and can be treated with antibiotics.
- Dry Eye Syndrome: This condition can cause burning and itching sensations in the eyes, along with discharge, especially if the eyes are not producing enough tears or the tears are of poor quality.
Do Not Miss Diagnoses
- Gonococcal Conjunctivitis: Although less common, gonococcal conjunctivitis is a serious condition that can cause severe eye discharge, burning, and itching. It's caused by the bacterium Neisseria gonorrhoeae and requires immediate antibiotic treatment to prevent vision loss.
- Herpes Simplex Keratitis: This condition is caused by the herpes simplex virus and can lead to serious complications, including vision loss, if not promptly treated. Symptoms can include eye discharge, burning, itching, and sensitivity to light.
- Chemical Burns: Exposure to chemicals can cause severe eye irritation, including burning, itching, and discharge. Prompt treatment is necessary to prevent long-term damage.
Rare Diagnoses
- Trachoma: A rare condition in developed countries, trachoma is a bacterial infection caused by Chlamydia trachomatis. It can lead to chronic eye discharge, burning, and itching, and if left untreated, can cause blindness.
- Sjögren's Syndrome: An autoimmune disorder that can cause dry eye syndrome, leading to burning, itching, and discharge due to decreased tear production.
- Keratoconjunctivitis Sicca: A condition characterized by decreased tear production, leading to dry, itchy, and burning eyes, which can also produce discharge.