Mydriatic pupil in giant cell arteritis

Sashank Prasad, Jennifer Baccon, Steven L. Galetta

Research output: Contribution to journalArticle

5 Scopus citations


A mydriatic pupil has been infrequently reported as a manifestation of giant cell arteritis. We report a patient with acute, evolving pupil dilation who was diagnosed with biopsy-proven giant cell arteritis. We document the time course for the development of pupillary near-light dissociation and denervation hypersensitivity. We discuss the possible mechanisms leading to mydriasis, including 1) parasympathetic dysfunction due to ischemia of the ciliary ganglion and post-ganglionic parasympathetic fibers and 2) direct iris ischemia. Repeated episodes of pupil dilation in this patient suggested ongoing microvascular insufficiency.

Original languageEnglish (US)
Pages (from-to)196-197
Number of pages2
JournalJournal of the neurological sciences
Issue number1-2
Publication statusPublished - Sep 15 2009


All Science Journal Classification (ASJC) codes

  • Neurology
  • Clinical Neurology

Cite this