41. There is some evidence that idiopathic trigger finger behaves differently in people with diabetes. 42. Surgery may be recommended for severe idiopathic kyphosis. 43. In September 2014, Barrie announced she has been diagnosed with idiopathic pulmonary fibrosis. 44. Many such reported symptoms overlap with other syndromes known as idiopathic environmental intolerance ). 45. Idiopathic subglottic stenosis is a narrowing of the airway due to an unknown cause.46. These included multiple sclerosis, porphyria, schizophrenia, idiopathic myopathies, and myositis. 47. Idiopathic interstitial pneumonia can be subclassified based on histologic appearance into the following patterns:48. The term " idiopathic " translates to unknown aetiology ( causation ). 49. Idiopathic Scoliosis is that for which all other etiologic explanations have been ruled out.50. Further complicating the diagnostic process, idiopathic hypersomnia lacks a clearly defining clinical feature.