{'fraction_non_alphanumeric': 0.03416856492027335, 'fraction_numerical': 0.002277904328018223, 'mean_word_length': 5.511111111111111, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Susac Syndrome with Frontal Intermittent Rhythmic Delta Activity (FIRDA)

Background: Susac syndrome is a rare condition involving the brain, retina, and cochlea. Electroencephalogram (EEG) findings from published case reports show mainly generalized slowing. Case report: A 30-year-old man presented with acute onset of superior vision loss, unsteady gait, and hearing loss. This was accompanied by short-term memory loss and behavioral and mood changes. MRI showed multiple white matter hyperintensities. The EEG showed frontal intermittent rhythmic delta activity. A diagnosis of Susac syndrome was made and treatment with methylprednisolone, ASA, and Nimodipine was instituted. At one-year follow-up, bilateral hearing loss, mild visual impairment, and mood changes were still apparent. Conclusion: Frontal intermittent rhythmic delta activity can be seen in Susac syndrome.