Pseudomonilethrix type II and pili bifurcati

Ruiz‐Villaverde, Ricardo; Villanova-Mateu, A; Olmo, Rosa Ortega del; Sánchez‐Cano, Daniel

doi:10.1111/j.1468-3083.2006.01564.x

Cited by 10 publications

(10 citation statements)

References 4 publications

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“…597,598 The defect may involve one of three keratin genes KRTHB6, KRTHB1, and KRTHB3. 604 The latter form may be the result of the compression of normal or fragile hairs between glass slides, prior to their microscopic examination. 601,602 Nail defects appear common with KRTHB1 defects.…”

Section: Monilethrixmentioning

confidence: 99%

Diseases of cutaneous appendages

Weedon

2010

Weedon's Skin Pathology

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Section: Monilethrixmentioning

confidence: 99%

Diseases of cutaneous appendages

Weedon

2010

Weedon's Skin Pathology

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“…Pili bifurcati (PB) is a rare autosomal dominant hair shaft dysplasia that presents with thin, short, fragile hair on the scalp, eyelashes, and eyebrows . The condition is caused by bifurcation of the hair fiber at multiple irregular intervals; each bifurcation produces two separate parallel branches that fuse again to form a single shaft, and each successive branch's own cuticle completely surrounds it .…”

Section: Hair Shaft Disorders Without Fragilitymentioning

confidence: 99%

“…Scanning microscopy shows grooves and partial twisting of the hair, irregular cuticle, deep grooves splitting hairs into two segments, and optically empty cavities within cortical and medullary layers on cross section . Associations include mosaic trisomy 8 syndrome , cognitive defect , juvenile cataracts , dental abnormalities , ulcerative colitis , and pseudomonilethrix type II .…”

Section: Hair Shaft Disorders Without Fragilitymentioning

confidence: 99%

Prognosis and Management of Congenital Hair Shaft Disorders without Fragility—Part II

Singh

Miteva

2016

Pediatric Dermatology

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Hair shaft disorders are characterized by congenital or acquired abnormalities of the hair shaft. The objective of this study was to review the literature regarding the prognosis and treatment options for hair shaft disorders. We used keywords in the search engines PubMed and Medline to identify all publications in English related to the prognosis and management of hair shaft disorders. Data were extracted from 96 articles that met search criteria. Findings were limited to case reports and small case series, as no studies were found. Disorders that improve in childhood include pili torti, trichorrhexis invaginata, woolly hair, and pili trianguli et canaliculi. Others, such as trichorrhexis nodosa, monilethrix, pili annulati, and pili bifurcati, improve with minoxidil. Oral retinoids have been found to improve hair abnormalities in trichorrhexis invaginata and monilethrix. There is no specific treatment for congenital hair shaft abnormalities. Gentle hair care is the mainstay of care for hair shaft disorders associated with fragility. Practices for gentle care include no brushing, backcombing, chemical products, tight braids, heat exposure, or mechanical grooming. Furthermore, any inherited or congenital disorder requires genetic counseling as part of management.

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“…All patients showed a negative response to an autologous serum skin test (ASST). The ASST was performed according to the method described by Sabroe et al 9 Patients were examined twice: first, during the symptomatic period, and next, during complete spontaneous remission lasting for at least 4 months (range 4-6 months) without any medication.…”

Section: Department Of Dermatologymentioning

confidence: 99%

“…Pseudomonilethrix should be ruled out before establishing the diagnosis of monilethrix. Some authors suggest that pseudomonilethrix is an autosomal dominant inherited nodal trichodystrophy with late onset, 9 while others suggest iatrogenic pseudomonilethrix as a condition produced by the procedure of preparing hairs for microscopic examination which occurs when hairs are pressed together between glass slides. It appears as irregularly constricted hair shafts, depending on the pressure applied or on the presence of cosmetic haircare products at the visualized site under dermoscopy.…”

mentioning

confidence: 99%