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January 1991

The Pinnal Hair Sign

Author Affiliations

Department of Dermatology and Leprosy Government General Hospital Madras 600 003, India

Arch Dermatol. 1991;127(1):126. doi:10.1001/archderm.1991.01680010138030

To the Editor.—  We had earlier reported our observation of absence of graying of pinnal hairs in 250 men.1 On continuing to observe pinnal hairs, we have noticed an interesting feature that we wish to share with your readers.

Report of a Case.—  A 60-year-old man with vitilgo showed graying of a few of his pinnal hairs. This made us carefully observe more patients with pinnal hairs. So far we have examined 482 men, all over 50 years of age, with pinnal hairs. Of these, 28 men were seen to have a few gray pinnal hairs. Dermatologic examination of these 28 men revealed that 12 of them showed vitiliginous patches. The size and number of the patches were variable. The sites involved included both covered and exposed areas of the body. There was no correlation between these parameters and the number of gray pinnal hairs. The remaining 16 patients

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