Visual snow syndrome (VSS): clinical features
Evidence-based neurology checklist on visual snow syndrome (vss): clinical features: Clinical features This manifests as continuous tiny flickering snow-like dots These involve the entire visual field They resemble the static of an analogue television The static may be black and white, coloured,…
Clinical features
- This manifests as continuous tiny flickering snow-like dots
- These involve the entire visual field
- They resemble the static of an analogue television
- The static may be black and white, coloured, flashing, or transparent
- The course may be progressive or constant
- Smoking and cocaine may transiently worsen symptoms
Demographic features
Exclusion features
Associated neurological features
Associated ophthalmic features
Associated entoptic or triggered ophthalmic features
Other associated features
Potential triggers
Diagnostic criteria
References
- Schankin CJ, Maniyar FH, Digre KB, Goadsby PJ. 'Visual snow' - a disorder distinct from persistent migraine aura. Brain 2014; 137:1419-1428.
- van Dongen RM, Haan J. Symptoms related to the visual system in migraine. F1000Res 2019; pii: F1000 Faculty Rev-1219.
- van Dongen RM, Waaijer LC, Onderwater GLJ, Ferrari MD, Terwindt GM. Treatment effects and comorbid diseases in 58 patients with visual snow. Neurology 2019; 93:e398-e403.
- Renze M. Visual snow syndrome and its relationship to tinnitus. Int Tinnitus J 2017; 21:74-75.
- Hodak J, Fischer U, Bassetti CLA, Schankin CJ. Episodic visual snow associated with migraine attacks. JAMA Neurol 2019 (Epub ahead of print).
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