mitochondrial encephalomyopathy https://www.malacards.org/card/mitochondrial_encephalomyopathy SCTID:447292006 DOID:890 MEDGEN:57960 A heterogenous group of disorders characterized by alterations of mitochondrial metabolism that result in muscle and nervous system dysfunction. These are often multisystemic and vary considerably in age at onset (usually in the first or second decade of life), distribution of affected muscles, severity, and course. (From Adams et al., Principles of Neurology, 6th ed, pp984-5) MESH:D017237 GARD:0024084 UMLS:C0162666 ICD9:277.87 MONDO:0004675 inborn mitochondrial myopathy