Woolly hair nevus: neonatal alopecia can be an initial manifestation

Murao, Kazutoshi; Kubo, Yoshiaki; Arase, Seiji

doi:10.1111/j.1365-4632.2011.05420.x

Cited by 5 publications

(5 citation statements)

References 6 publications

(6 reference statements)

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“…Postnatal zeigt er sich oft zunächst als ein weniger behaartes Areal, sodass als Differenzialdiagnosen eine Aplasia cutis congenita oder auch eine durch die Geburt bedingte, posttraumatische Alopezie infrage kommen [18].…”

Section: Wollhaarnävusunclassified

Fehlbildungen und Nävi des behaarten Kopfes

Behle

Hamm

2014

Hautarzt

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Unusual congenital or early-onset skin lesions on the scalp often pose a diagnostic challenge particularly as the clinical evaluation may be hampered by dense hair growth. Thus, this paper provides a concise review on developmental abnormalities and nevi with exclusive or predominant scalp localization. Aplasia cutis congenita occurs as an isolated finding, in association with genetic syndromes, nevi and anomalies or as a consequence of intrauterine trauma and teratogens. A hairless area with a narrow surrounding rim of hypertrichosis (hair collar sign) may point to occult cranial dysraphism, especially if accompanied by further suggestive signs as port-wine stains, large hemangiomas, dimples, congenital dermoid cysts, and sinuses. Many diverse entities may hide behind cutis verticis gyrata with the primary essential form being rare and representing a diagnosis of exclusion. In contrast to former belief, benign adnexal tumors arise in a nevus sebaceus considerably more often than basal cell carcinomas and other malignant epithelial tumors. Provided that tumor development is not suspected, excision of a nevus sebaceus nevus is indicated primarily for aesthetic-psychosocial reasons. However, surgical treatment is considerably easier in small children. Nevus sebaceus may be a cutaneous marker for several complex syndromes whereas nevus psiloliparus presents almost always in connection with encephalocraniocutaneous lipomatosis. Congenital melanocytic nevi of the scalp tend toward clinical regression, so that surgical intervention in large lesions should be carefully considered. In contrast, the threshold for excision of blue nevi and other conspicuous melanocytic nevi on the scalp should be low, especially since they are difficult to monitor.

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Section: Wollhaarnävusunclassified

Fehlbildungen und Nävi des behaarten Kopfes

Behle

Hamm

2014

Hautarzt

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“…When presenting in a neonate, it may manifest as a patch of alopecia instead of a coiled and curly hair patch. It is not true alopecia but rather an area of sparse thin hair, which reflects the slower growth rate of the hair in comparison with normal hair [9]. Some authors consider the growth rate of the affected hair to be normal, but the hair may be short owing to the shortened growth cycle [1].…”

Section: Introductionmentioning

confidence: 99%

Woolly hair nevus: case report and review of literature

Gomes

Guiote²,

Henrique³

2020

Dermatology Online Journal

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“…In the newborn, a patch of alopecia is usually due to aplasia cutis congenita or sebaceous nevus (SN). Trichoscopy may help in differentiating these conditions . Aplasia cutis congenita may present at birth as an erosion, ulcer, or area of atrophy with a smooth or papyraceous appearance.…”

mentioning

confidence: 99%

“…Rarely, focal neonatal alopecia is the initial sign of a woolly hair nevus, a nonhereditary condition that first appears at birth or when the scalp hair begins to grow, characterized by a limited, well‐demarcated area of unruly, curly, thin hairs without specific dermoscopic features .…”

mentioning

confidence: 99%

Neonatal Alopecia Due to Birth Trauma: Case Report and Trichoscopic Findings

Liberati

Starace

Patrizi

et al. 2016

Pediatric Dermatology

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A 4-day-old boy was referred for evaluation of an oval patch of occipital alopecia associated with caput succedaneum and ipsilateral eyelid ecchymoses. Based on the history of a prolonged, difficult labor with vacuum-assisted delivery, the diagnosis of neonatal alopecia associated with birth trauma was made. Trichoscopy showed purple dots corresponding to blood extravasation and follicular ostia. We also review the trichoscopic differential diagnosis of focal neonatal alopecia.

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Woolly hair nevus: neonatal alopecia can be an initial manifestation

Cited by 5 publications

References 6 publications

Fehlbildungen und Nävi des behaarten Kopfes

Fehlbildungen und Nävi des behaarten Kopfes

Woolly hair nevus: case report and review of literature

Neonatal Alopecia Due to Birth Trauma: Case Report and Trichoscopic Findings

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