Research Letter

Isolated patchy heterochromia with pili annulati features on light and electron microscopy

Author Affiliation(s)



1. Restano L, Barbareschi M, Cambiaghi S, Gelmetti C, Ghislanzoni M, Caputo R. Heterochromia of the scalp hair: a result of pigmentary mosaicism? J Am Acad Dermatol. 2001;45:136-9. 2. Sahu P, Dayal S, Kaur R, Singh J. Isolated Patchy Heterochromia of the Scalp Hair: A Rare Entity with Literature Review. Int J Trichology. 2019;11:247-250 3. Ling HY, Yee Wong SM, Yang J, Aan Koh MJ. A rare case of congenital red hair heterochromia of the scalp. JAAD Case Rep. 2020;6:700-701. 4. Giehl KA, Ferguson DJ, Dawber RP, Pittelkow MR, Foehles J, de Berker DA. Update on detection, morphology and fragility in pili annulati in three kindreds. J Eur Acad Dermatol Venereol. 2004;18:654-8. 5. Feldmann KA, Dawber RP, Pittelkow MR, Ferguson DJ. Newly described weathering pattern in pili annulati hair shafts: a scanning electron microscopic study. J Am Acad Dermatol. 2001;45:625-7.

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