Characteristic time courses for various neurologic disorders Characteristic time courses for various neurologic disorders. A: Brief episodes of dysfunction may represent seizures or migraine attacks. B: A pattern of recent-onset headaches on wakening may be caused by an expanding brain tumor. C: A relapsing-remitting course is characteristic of multiple sclerosis. D: Sudden onset of a fixed deficit is characteristic of cerebrovascular disease. E: Slowly progressive dysfunction is suggestive of neurodegenerative diseases, such as Alzheimer's or Parkinson's. F: Subacutely progressive dysfunction, which advances over weeks to months, is often seen with brain tumors. Source: The Relationship Between Neuroanatomy and Neurology, Clinical Neuroanatomy, 28e Citation: Waxman SG. Clinical Neuroanatomy, 28e; 2017 Available at: http://neurology.mhmedical.com/DownloadImage.aspx?image=/data/books/1969/waxman28_ch4_f005.png&sec=147036124&BookID=1969&ChapterSecID=147036070&imagename= Accessed: March 05, 2018 Copyright © 2018 McGraw-Hill Education. All rights reserved