Giant cell arteritis (GCA), also known as Horton’s disease, is a granulomatous vasculitis affecting large and medium-sized arteries, frequently leading to visual complications due to ophthalmic artery involvement. We present a case of a 72-year-old woman with bilateral optic perineuritis, marking the first manifestation of GCA. The patient experienced severe headaches and progressive vision loss, with brain MRI revealing thickening of the temporal artery walls and optic nerve sheath enhancement. Optic perineuritis, while rare, can be an initial sign of GCA, underscoring the importance of early recognition and treatment to prevent irreversible visual impairment.
Key words: vasculitis, giant cell arteritis, Horton, perineuritis
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