Acute Dacryoadenitis due to Primary Epstein-Barr Virus Infection.

We herein present the case of a 28-year-old male patient who presented with fever and bilateral upper eyelid edema without other upper airway symptoms and was diagnosed with acute dacryoadenitis due to Epstein-Barr virus (EBV) infection. The patient's medical history was unremarkable. Laboratory tests revealed lymphocytosis with atypical lymphocytes and abnormal liver function tests. Physical examination and computed tomography revealed swelling in the lacrimal glands, and serological tests confirmed EBV infection. Although rare, ocular symptoms of primary EBV infection are important for diagnosis. Acute dacryoadenitis should be considered as a rare manifestation and an underdiagnosed complication of primary EBV infection.