Navajo neuropathy

The Navajo Nation (Navajo: Naabeehó Bináhásdzo) is a Native American indigenous tribe covering about 17,544,500 acres (71,000 km2; 27,413 sq mi), occupying portions of northeastern Arizona, southeastern Utah, and northwestern New Mexico in the United States. This is the largest land area retained by an indigenous tribe in the United States, with a population of 173,667 as of 2010. [Source: Wikipedia ]

Navajo neurohepatopathy
OrphaNet reference
Navajo neurohepatopathy 
May Cause
Leukodystrophy / leukoencephalopathy