Hair anomalies as a sign of mitochondrial disease

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Abstract
In 8 out of 25 children with a mitochondrial disorder, slow growing, sparse and fragile hair was observed as an early sign of their disease. Microscopic examination of the hair showed the presence of trichorrhexis nodosa and pili torti. Hair abnormalities can be added to the wide clinical spectrum of mitochondrial disorders. Conclusion:microscopic hair examination is an easy, first level diagnostic tool that can lead to a suspected mitochondrial defect in the early stages of the disease, before symptoms of progressive multi-organ involvement develop.