Higher incidence of rolled hairs in renal transplant recipients: a possible complication of corticosteroid and cyclosporine therapy

Trichoscopy beyond scalp. A narrative review

Dermoscopy is becoming an indispensable tool in everyday practice, with an expanding range of applications. Trichoscopy is effective not only in establishing the diagnosis of scalp disorders but also in the follow-up of treatment. The MEDLINE database was searched using the terms "dermoscopy" and "trichoscopy" in combination with each of the following: "axilla," "pubic area," "beard," "eyebrows," "eyelashes," and "body hairs." We included case reports, case series, and review articles mentioning the previous terms. By providing an updated review from the literature, we aimed to emphasize the potential uses of trichoscopy in detecting diseases in hairy locations other than the scalp. Various inflammatory conditions, infections, and infestations are discussed.

Circle Hairs in a Patient with Multiple Myeloma

Circle hair is a rare body-hair disorder of unknown etiology, typically characterized by perfectly or nearly perfectly coiled hair located below the cornified layer of the skin. Its main histopathological features are dilated hair-follicle infundibula and entrapped hair shafts. After its first description in 1963, there have only been a small number of reported cases, and its pathophysiology remains unclear. Herein, we report a case of an 80-year-old woman with skin lesions and abnormal hairs on both legs. We also propose a possible mechanism of her circle hairs: it may have occurred as an effect of her acquired ichthyosis secondary to her underlying multiple myeloma. There is no specific treatment for circle hairs, and reassurance that it is a harmless condition is sufficient. We prescribed a topical humectant and keratolytic agent to moisten the skin and lessen the hair entrapment, which resulted in clinical improvement. As the pathogenesis of the disease is unknown, further studies are warranted.

Circle hairs: a clinical curiosity

A case of circle hairs is reported and the literature on the subject reviewed. Differential diagnoses are discussed as well as some theories on the nature of circle hairs.