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March 1970

Scanning Electron Microscopy of Normal and Abnormal Hair Shafts

Author Affiliations

Newcastle upon Tyne, England

From the University Department of Dermatology, Royal Victoria Infirmary, Newcastle upon Tyne, England.

Arch Dermatol. 1970;101(3):316-322. doi:10.1001/archderm.1970.04000030060009

Normal hair and hair from patients with pili annulati, pili torti, trichorrhexis nodosa, and monilethrix have been examined using the scanning electron microscope. Study of the fine architecture of the hair shaft surface has been greatly facilitated with this technique. New findings described in this study are longitudinal ridging of the internodes in monilethrix and distinctive surface irregularity of the wider abnormal bands in pili annulati.