- Parasitic infection with Trypanosoma cruzi
- South America, Brazil
- Trypanosoma cruzi infection (bug bite) → Initially acute conjunctivitis, preauricular lymphadenitis, fever, anorexia → Long-term neurological disorders with diffuse ganglion cell involvement (includes destruction of myenteric plexus) → Abnormal motility → Disease in multiple organs, includes cardiomyopathy, megacolon, megaureter, & megaoesophagus
- Dx: serological tests
- DDx: DM, Polio, Sarcoid, Amyloidosis