4 citations
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January 2011 in “European journal of dermatology/EJD. European journal of dermatology” A boy had a rare scalp condition with thickened skin and different-colored hair.
1 citations
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October 2022 in “Dermatology practical & conceptual” Isolated patchy heterochromia with pili annulati can occur without other health issues.
18 citations
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April 1989 in “Archives of Dermatology” A 15-year-old girl exhibited segmented heterochromia in her black scalp hair, characterized by alternating dark and light bands, which was associated with iron-deficiency anemia. Clinical and laboratory investigations suggested that low serum iron levels were crucial in reducing eumelanogenesis and possibly affecting melanin transfer. The condition resolved completely following iron supplementation, which led to increased eumelanogenesis in the hair. This case indicated that iron played a significant role in the process of melanogenesis within follicular melanocytes.
16 citations
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November 2003 in “Journal of the American Academy of Dermatology” June 2025 in “British Journal of Dermatology” Segmented hair color changes can indicate active alopecia areata.