Two cases of drug-induced orbital inflammatory disease

Orbital inflammatory disease (OID) includes all inflammatory processes affecting the orbit. Although several aetiologies are recognised, a cause may not be elucidated. We describe 2 cases in which drugs (hyaluronidase and zoledronic acid) were the cause of OID. In patients with a clinical picture of OID simulating an orbital cellulitis, the recent drug history should be considered as a possible aetiology, and treatment with steroids with or without a biopsy should be considered after an infection has been excluded.