Subacute intractable neurological diseases sometimes require patients to make various choices in life without accepting the disease. Therefore, doctors need to be diagnose these diseases early. However, in clinical settings, diagnosis is often sought only from the localized history and symptoms and not the overall picture of the disease. In addition, there are many findings that are difficult to interpret, and depending on the combination of findings, the diagnostic criteria or guidelines may be met. As a result, the disease fits only seemingly to the findings. Therefore, I would like to urge physicians to be aware of pitfalls by referring to the cases refferred to our neurology department for us to assess them.