{'fraction_non_alphanumeric': 0.047619047619047616, 'fraction_numerical': 0.016611295681063124, 'mean_word_length': 5.503597122302159, '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}}
Comment: Diagnosing stroke in acute dizziness—Do the “eyes” still have it?

In this issue of Neurology®, Kerber et al.1 describe 272 emergency department patients with acute, continuous dizziness and nystagmus or gait unsteadiness, 29 (11%) with strokes by MRI neuroimaging. Their population is similar to those described previously as the acute vestibular syndrome (AVS).2 The authors compare clinical features (ABCD2 [age, blood pressure, clinical features, duration, and diabetes] risk score, general neurologic examination, and head impulse, nystagmus pattern, test of skew [HINTS]2 eye movement tests) in stroke and nonstroke patients. They contend that no single examination “can identify a sufficiently low-risk group” to rule out stroke in AVS. They suggest instead a mathematical modeling approach combining all of these factors to identify a very low-risk population (86 [32%] without stroke).