from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of obscure or unknown origin. Used of diseases.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of uncertain origin, either introduced or native to its area.
  • adj. Presumed but not proven to be caused by an abnormality in a particular part of the brain (contrasts with symptomatic and idiopathic).
  • adj. Of uncertain cause.

from The Century Dictionary and Cyclopedia

  • Same as cryptogenetic.


from Wiktionary, Creative Commons Attribution/Share-Alike License

From crypto- + -genic.


  • The 35-year-old woman's symptoms were typical of this unusual kind of "cryptogenic" stroke, says Jose Biller, MD, professor and chair of the neurology department at Loyola University,


  • If it was a problem, he said, "that information needs to be in the public domain" and would have "much larger implications for STARFlex, a device already marketed in Europe for the treatment of cryptogenic stroke."

    Archive 2009-01-01

  • After the influenza, some cryptogenic temperature set in.

    My Life

  • In 2007, Rajaratnam suffered a "severe cryptogenic stroke," or a stroke of undetermined cause, Wise said. -- Top News

  • My medical knowledge was certainly notched up, and for a few brief weeks I managed to slip "cryptogenic fibrosing alveolitis" into casual conversation.

    NYT > Home Page

  • Etiology was idiopathic in 50.8%, remote symptomatic in 27.8%, and cryptogenic in 21.3%.


  • Sunil Patel, a patient of cryptogenic cirrhosis, was advised to undergo a liver transplant in March after developing severe complications in February of heavy water retention in stomach which also affected Patel's kidneys.

    Daily News & Analysis

  • RESPECT clinical trial, designed to evaluate the link between a patent foramen ovale PFO and cryptogenic stroke, with 807 patients enrolled in the study and 1,639 patient follow-up years as of October 31, 2010.

    AGA Medical Reports 2010 Third Quarter Financial Results - Yahoo! Finance

  • While some cases have unknown cause (cryptogenic IS), many experts cite tuberous sclerosis (benign growth of brain tumors) and lack of oxygen to the baby at birth as common causes of symptomatic IS. - latest science and technology news stories

  • "Patients with no cortical lesion (e.g. Down syndrome, leukodystrophy, or cryptogenic cases) usually require no chronic treatment following the control of spasms-ACTH treatment may be stopped after only one month, and VGB after 6 months," said Dr. Dulac. - latest science and technology news stories


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  • JM just doesn't know where he got cryptogenic from.

    February 14, 2010