A 32-year-old male with visual snow syndrome exhibited persistent visual disturbances despite normal neuro-ophthalmologic findings.
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Symptoms included continuous visual static, palinopsia, photophobia, nyctalopia, and tinnitus, following a viral infection and academic stress.
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The patient met ICHD-3 criteria for visual snow syndrome, with proposed mechanisms involving cortical hyperexcitability and thalamocortical dysrhythmia.
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Treatment with escitalopram led to subjective improvement, although prior data indicated SSRIs are usually ineffective for visual snow syndrome.
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Visual snow syndrome is characterized by persistent dynamic visual noise and normal structural testing, highlighting a functional disability.
Nearly 90% of patients who met algorithmic criteria for postacute sequelae of SARS-CoV-2 infection had at least 1 chronic or potentially chronic condition requiring ongoing clinical management.
