label: severe X-linked mitochondrial encephalomyopathy
label_lc: severe x-linked mitochondrial encephalomyopathy
description: Severe X-linked mitochondrial encephalomyopathy is an extremely rare mitochondrial respiratory chain disease resulting in a neurodegenerative disorder characterized by psychomotor delay, hypotonia, areflexia, muscle weakness and wasting in the two patients reported to date.