Ablation with ruby laser can be considered as a therapeutic option. CHs were first described in CHs are rarely reported as they are asymptomatic in nature. According to some authors, CH has small hair diameter, unable to penetrate stratum corneum and hence, grow subcorneally in a circular track,[ 7 ] while few argue that it is a genetically predetermined disorder. Tightly coiled hair shafts get embedded in stratum corneum and are seen as small dark circles next to hair follicle.
Hair can be extracted and rolled out but recoils. It is common in middle-aged males mainly on abdomen and bony prominences. A year-old obese man having sedentary lifestyle was diagnosed with irregularly shaped hairs since many years with no other dermatologic concerns. CH needs to be differentiated from rolled hairs, which is relatively common disorder of hair growth associated with follicular hyperkeratosis and keratin plugging. Rolled hairs are not perfectly circular and appear as irregularly coiled within a hyperkeratotic papule and are associated with signs of inflammation.
Rolled hairs are usually associated with keratosis pilaris, scurvy and has also been associated with corticosteroid therapy, xerosis, neurodermatitis, atopic dermatitis, ichthyosis, and palmoplantar keratoderma. Dermatoscopy is very useful noninvasive technique for evaluation of such hair conditions, which can help in avoiding unnecessary histopathology as well as treatment with topical steroids for hyperpigmented papules which can cause various side effects.
National Center for Biotechnology Information , U. Journal List Int J Trichology v. Int J Trichology. Author information Copyright and License information Disclaimer. Address for correspondence: Dr. E-mail: moc. This article has been cited by other articles in PMC. Abstract Pili multigemini and circle hairs CHs both are hair shaft deformities.
Keywords: Circle hairs, dermatoscopy, pili multigemini, rolled hairs. Open in a separate window. Figure 1. Figure 2. Financial support and sponsorship Nil. Conflicts of interest There are no conflicts of interest.
De Berker D, Sinclair R. Rook A, Dawber R. Diagnosis of pili multigemini is visual. Trichoscopy enhances the evaluation of hair disorders and facilitates the diagnosis of this rare hair shaft dysplasia. Two features define this dysplasia. Each bifurcation produces two separate parallel branches, which fuse again to form a single shaft, and each branch of the successive bifurcations is covered with its own cuticle. Pili gemini maintains the double tipped papilla and consequently the hair shaft does not fuse again.
In conclusion, we present an extensive case of pili multigemini over the back. This condition has been described previously as the nevoid pili multigemini. Despite the rarity of this entity, probably it could be a commonly recognizable condition with an exhaustive exploration. The large areas implicated in the patients described and the normal hair appearance in other locations suggests a genetic link.
Source of Support: Nil. Conflict of Interest: None declared. National Center for Biotechnology Information , U. Journal List Int J Trichology v. Int J Trichology. Author information Copyright and License information Disclaimer. Address for correspondence: Dr. E-mail: moc. This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.
This article has been cited by other articles in PMC. Abstract Pili multigemini is a rare disorder where more than one hair exists in a single hair follicle. Keywords: Hair shaft dysplasia, pili multigemini, trichoscopy. Open in a separate window. Figure 1. Figure 2. Scanning electron microscopy in the diagnosis of pili multigemini. You can also phone any time for our hair loss helpline or to arrange a free consultation. The worlds largest collection of hair loss success stories, with photos and comments from patients who are using our treatment programmes.
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