Background: Photophobia has never been investigated in MS.
Methods: In this pilot study we used photosensitivity questionnaire assessment (PAQ) to evaluate tolerability to light in 73 MS patients and 62 healthy controls.
Results: We identified a lower PAQ score and a higher number of photophobic subjects in MS than in controls. Moreover, clinical disability or previous optic neuritis did not predict the photosensitivity profile.
Conclusion: Further studies to investigate the pathophysiological mechanisms underlying photophobia in MS are needed.
Keywords: Multiple Sclerosis; Optic neuritis; Photophobia; Photosensitivity; Photosensitivity questionnaire; Trigeminal nucleus.
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