18 citations
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April 1989 in “Archives of Dermatology” This study found that segmented heterochromic scalp hair associated with iron-deficiency anemia in a teenage girl completely recovered following iron supplementation, suggesting a role for iron in hair pigment production.
16 citations
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November 2003 in “Journal of the American Academy of Dermatology” Iron therapy cured the boy's hair color issue.
8 citations
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May 2003 in “Clinical and Experimental Dermatology” This case report suggests that nonsynchronized segmented heterochromia in black scalp hair in a 14-year-old girl may represent premature greying unrelated to deficiencies in iron, copper, zinc, or protein.
1 citations
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May 2012 in “Clinical and Experimental Dermatology” This article discusses the presence of iron in segmented heterochromia of scalp hair and concludes that it occurs without iron-deficiency anemia, reporting no new clinical results.
June 2025 in “British Journal of Dermatology” This case study describes an uncommon variant of coudability hair in alopecia areata, where intermittent inflammatory processes result in alternating bands of lighter color and reduced hair shaft calibre.