May be caused by viral or bacterial infections or other inflammatory conditions such as sarcoidosis or thyroid orbitopahy.
Clinical Features
Symptoms: orbital discomfort, lid swelling, redness and discharge.
Signs:
Upper lid swelling, redness, warmth and tenderness to palpation
Swollen palpebral lobe of the lacrimal gland can be easily visualized in the supratemporal fornix by everting the upper lid while having the patient looking down.
May be present with globe displacement or proptosis if orbital lobe involved
Work Up
Culture and Gram staining of discharge, CBC, consider blood culture if systemic involvement is suspected.