There are numerous disorders which fall under the classification of mitochondrial diseases, and more are being discovered all the time. Some of the more common names include the following:
Mitochondrial myopathy
Mitochondrial encephalomyopathy
Leigh's disease/syndrome
Mitochondrial encephalomyopathy, lactic acidosis and strokelike episodes (MELAS)
Kearns-Sayre syndrome (KSS)
Myoclonus epilepsy with ragged red fibers (MERRF)
Mitochondrial neurogastrointestinal encephalomyopathy (MNGIE)
Neuropathy, ataxia and retinitis pigmentosa (NARP)
Chronic progressive external ophthalmoplegia (PEO or CPEO)
Complex I, II, III, IV or V (or combination of complexes)
Carnitine Deficiency
Lactic Acidosis
Leber's hereditary optic neuropathy (LHON)
Fatty oxidation disorders (FODs)