This study provides Class III evidence that CSF levels of sAPPβ, YKL-40, and NfL are useful to identify patients with FTLD-related syndromes.

Acute confusional state following metrizamide myelography has been reported to occur in up to 2 % of patients. These patients have been diagnosed as having toxic encephalopathy. Recently, various cases have been reported to have a nonconvulsive status (absence status or complex partial status) who responded well to diazepam or clonazepam therapy. However, some authors have described cases of nonresponders to anticonvulsive therapy. Failure of therapy can be dose-related. For this reason, our patient was closely monitored by EEG to determine if dose adjustment was warranted, thereby achieving good results.

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