cryptogenic

Of uncertain origin, either introduced or native to its area.

Adjective

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

    Synonyms: idiopathic

Origin

From crypto- + -genic.