Clinical Reasoning: A 45-year-old man with progressive insomnia and psychiatric and motor symptoms

In the Resident & Fellow paper “Clinical Reasoning: A 45-year-old man with progressive insomnia and psychiatric and motor symptoms” by Lima et al.,¹ there is an error in the fifth paragraph of section 2 of the paper—the second sentence in this paragraph should read “The immunoglobulin G index was not elevated (0.5) and no oligoclonal bands were observed in the CSF or serum.” The authors regret the error.