Abstract

when extracted with a sharp blade, uncoiled to a length of less than 2.5 cm. When released, they either partially or fully recoiled. Rolled hairs are distinct from circle hairs. They are not perfectly circular like circle hairs, but are rather irregularly coiled within a hyperkeratotic papule. 3 A recent article erroneously used circle hairs and rolled hairs as synonymous terms. 5 The cause of circle hairs is unknown. We noted circle hairs to be slightly smaller in diameter than normal straight hairs. The two prior articles did not comment on the relative diameter of circle hairs. We also noted that all five of our patients were obese and elderly and had abundant body hair. The prior articles did not comment on the degree of hairiness of their patients. There appeared to be no association with frequency of bathing in our patients. One possible explanation for circle hairs may be a small-diameter hair that is unable to penetrate the stratum comeum as a larger-diameter hair does and thus grows in a circular tract in a subcorneal location. We believe that circle hairs are more common than reported because they are rarely looked for; in addition, they are easily overlooked because they occur predominantly in hairy persons.

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