Relating to or denoting any disease or condition that arises spontaneously or for which the cause is unknown.
- Ulcerative colitis and Crohn's disease are idiopathic inflammatory disorders of unknown aetiology.
- Basically, idiopathic pericarditis is a disease of exclusion.
- Psychiatric symptoms frequently coexist with idiopathic Parkinson's disease and are often underdiagnosed and poorly treated.
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