What is Acidemia, isovaleric?

A rare genetic condition where the body can't process proteins adequately. More specifically, there are insufficient levels of the enzyme needed to break down an amino acid called leucine. This results in a build up of isovaleric acid which can harm the brain and nervous system. Some people suffer severe symptoms from birth and others suffer milder symptoms that come and go and are affected by such things as infections or consumption of high protein food.

Source: http://www.rightdiagnosis.com