idiopathic

/ˌɪdiəˈpæθɪk/
adjective
  1. Relating to a disease or condition that arises spontaneously or for which the cause is unknown.
    • Doctors often use the term 'idiopathic' when they cannot find a specific reason for a patient's symptoms.
    • The patient was diagnosed with idiopathic pulmonary fibrosis, meaning the cause of the scarring in her lungs was unknown.
    • Idiopathic scoliosis is the most common type of curved spine, and it usually appears in otherwise healthy children.
Antonyms
What does "idiopathic" mean? | whatsthatwordmean | whatsthatwordmean