Photophobia in multiple sclerosis.

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.