Differential Diagnosis for Red Eyelid, Painful to Touch, with Clear Discharge and Runny Nose
- Single Most Likely Diagnosis
- Viral conjunctivitis: This condition is characterized by redness, discomfort, and a watery discharge, often accompanied by symptoms of a common cold, such as a runny nose. The painful touch and clear discharge are consistent with viral conjunctivitis, making it the most likely diagnosis.
- Other Likely Diagnoses
- Allergic conjunctivitis: This condition can cause redness, itching, and clear discharge, especially if the patient has allergies. The presence of a runny nose supports this diagnosis, as it could be part of an allergic reaction.
- Bacterial conjunctivitis: Although it typically presents with a thicker, more purulent discharge, some cases can have a clear discharge, especially in the early stages. The painful eyelid could be consistent with bacterial conjunctivitis.
- Do Not Miss Diagnoses
- Orbital cellulitis: This is a serious infection of the tissues surrounding the eye, which can cause pain, redness, and swelling. Although it is less likely, missing this diagnosis could lead to severe complications, including vision loss.
- Herpes zoster (shingles): If the patient has a history of shingles, it could reactivate in the eye, causing pain, redness, and potentially serious complications if not treated promptly.
- Rare Diagnoses
- Sjögren's syndrome: An autoimmune disorder that can cause dry eyes but sometimes presents with clear discharge and eye discomfort. It's less likely but should be considered in patients with a history of autoimmune diseases.
- Keratitis: Inflammation of the cornea, which can be caused by various factors, including infection or injury. It might present with pain, redness, and clear discharge, but it's less common compared to conjunctivitis.