A Pseudoparasite of the Scalp Hair

Brunner, Matthew J.

doi:10.1001/archderm.1957.01550160109015

Cited by 27 publications

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“…After the first description of hair cast by Klingman in 1957,[1] few authors have described and classified the HCs based on their composition. [23] Brunner[10] described them as persistent hair root sheaths that had failed to disintegrate. Scott and Roenigk[2] in 1983 proposed a two-group classification of hair casts.…”

Section: Discussionmentioning

confidence: 99%

Tubular hair casts in trichoscopy of hair and scalp disorders

et al. 2019

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Introduction: Hair casts have been reported in a variety of hair and scalp disorders. Trichoscopy allows a quick and noninvasive method for the evaluation of hair and scalp disorders in high magnification. However, the study of hair casts seen in trichoscopy is lacking. Objective: The main objective is to study the occurrence and patterns of tubular hair cast (THC) in different hair and scalp disorders. Patients and Methods: The patients with hair and scalp disorders presenting at the dermatology department of our hospital were evaluated using trichoscopy. Cases of primary parakeratotic disorders and behavioral disorders were excluded. After a detailed history and evaluation of the hair and scalp, histopathology, light microscopic examination, potassium hydroxide examination, and fungal culture were done when necessary. Results: THC was seen in total 21 cases of seven different hair and scalp disorders. Of these, the majority of cases were of discoid lupus erythematosus (DLE) (5/21) and maximum frequency of THCs within a disorder was seen in cases of pemphigus foliaceus (PF) (50%). Proximal casts occurred in 90.47% of cases. Single cast involving two shafts was seen in a case of PF, and two casts within a single shaft were seen in two cases of DLE and one case of alopecia areata. Conclusions: THCs in trichoscopy can be seen in various hair and scalp disorders and their study may help during the diagnosis of those disorders when combined with other trichoscopic features.

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Section: Discussionmentioning

confidence: 99%

Tubular hair casts in trichoscopy of hair and scalp disorders

et al. 2019

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“…These lesions were asymptomatic and had been noticed simultaneously in all three children approximately three months previously. The Medical and Dental Building (1).…”

Section: Report Of Casesmentioning

confidence: 99%

Peripilar Keratin Casts

Scott¹

1959

Arch Dermatol

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“…Common differential diagnoses include peripilar keratin casts, or primary pseudopediculosis, and parakeratotic hair casts . The former is a rare idiopathic disorder with no concomitant pathologic conditions and a higher prevalence in girls . Because preadolescent girls are mainly affected, the effects of hairstyles with persistent traction, such as ponytails and braids, which may lead to circulatory disturbances and scalp inflammation, provide a more likely explanation for gender differences than hormonal effects .…”

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confidence: 99%

“…Since the first description in 1957 , only a few dozen cases have been reported in the literature. To the best of our knowledge, this is the first report in a boy since 1995 .…”

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confidence: 99%

Challenging Diagnosis of Peripillous Sheaths

Gnarra

Saraceni

Rossi

et al. 2014

Pediatric Dermatology

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Peripillous sheaths, or hair casts, are asymptomatic, white, cylindrical concretions that encircle the hair without adhering to it. They are infrequently documented in the literature, are often misdiagnosed, and generate avoidable apprehension and expense for parents and caregivers. Dermoscopy is the standard for a rapid, noninvasive, cost-effective diagnosis. We describe a case of peripillous sheaths presenting in a boy.

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A Pseudoparasite of the Scalp Hair

Cited by 27 publications

References 0 publications

Tubular hair casts in trichoscopy of hair and scalp disorders

Tubular hair casts in trichoscopy of hair and scalp disorders

Peripilar Keratin Casts

Challenging Diagnosis of Peripillous Sheaths

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