Visual Snow Syndrome

Visual snow syndrome is a neurological disorder characterized by continuous visual static or “snow” in the visual field. Clinical features include photophobia, palinopsia, and migraine-like symptoms. Etiology is idiopathic, with possible involvement of thalamocortical dysrhythmia. Diagnosis is clinical, based on exclusion of ophthalmologic and neurological disorders. Management includes pharmacologic (migraine therapy) and lifestyle strategies; prognosis is chronic but non-progressive.