<unk>  (or 'hyperammonaemia') is a metabolic disturbance characterised by an excess of ammonia in the blood. It is a dangerous condition that may lead to encephalopathy and death. It may be primary or secondary.
Ammonia is a substance that contains nitrogen. It is a product of the catabolism of protein. It is converted to the non-toxic substance urea prior to excretion in urine by the kidneys. The metabolic pathways that synthesise urea are located first in the mitochondria and then into the cytosol. The process is known as the urea cycle, which comprises several enzymes acting in sequence.
Hyperammonemia
Lactic acidosis
Hypermethioninemia
Hyperaemia
Hypouricemia
Isovaleric acidemia
Azotemia
Ketoacidosis