 20 % to 50 % of individuals with intestinal involvement also exhibit cardiac involvement . Up to 10 % of chronically infected individuals develop neuritis that results in altered tendon reflexes and sensory impairment . Isolated cases exhibit central nervous system involvement , including dementia , confusion , chronic encephalopathy and sensory and motor deficits . 
 20 % to 50 % of individuals with intestinal involvement also exhibit cardiac involvement . Up to 10 % of chronically infected individuals develop neuritis <a href='null_relcl' title='1'><mark>that</mark></a>results in altered tendon reflexes and sensory impairment . Isolated cases exhibit central nervous system involvement , including dementia , confusion , chronic encephalopathy and sensory and motor deficits . 
20 % to 50 % of individuals w intestinal involvement also exhibit cardiac involvement . Up to 10 % of chronically infected individuals develop neuritis results in altered tendon reflexes and sensory impairment . Isolated cases exhibit central nervous system involvement , including dementia , confusion , chronic encephalopathy and sensory and motor deficits .