idiopathic thrombocytopenia definitionidiopathic hypertension definitionidiopathic cardiomyopathy definitionidiopathic scoliosis definitionidiopathic epilepsy definitionidiopathic neuropathy definitiondefine idiopathicidiopathic meaningdefine idiopathic scoliosisdefine idiopathic epilepsythe term idiopathic is defined asidiopathic pd definition