Nevus, Epidermal

Description

Epidermal nevi are congenital lesions that affect about 1 in 1,000 people. They appear at or shortly after birth as localized epidermal thickening with hyperpigmentation that frequently follow the lines of Blaschko, suggesting that they result from postzygotic somatic mutation in the skin (Paller et al., 1994).A rare subgroup of epidermal nevi is clinically indistinguishable from other epidermal nevi, but displays histopathologic features typical of epidermolytic hyperkeratosis (see EHK, {113800}), and patients with this type of epidermal nevi sometimes have offspring with generalized EHK (Paller et al., 1994).Woolly hair nevus is a rare condition characterized by the development of woolly hair in a restricted area on the scalp, either present at birth or becoming evident later in life when scalp hair begins to grow. Woolly hair nevus can be an isolated finding or can occur in association with additional ectodermal defects; epidermal nevi have been reported in association with woolly hair nevi (summary by Ramot and Zlotogorski, 2015).Nevus sebaceous, a benign congenital skin lesion that preferentially affects the scalp and face, is characterized by hairless, yellow-orange plaques of various size and shape. Histology shows that nevus sebaceous is a hamartoma consisting of epidermal, sebaceous, and apocrine elements. About 24% of nevi develop secondary tumors, some of which may be malignant (summary by Groesser et al., 2012).Also see giant pigmented hairy nevus (OMIM ) and malignant melanoma (OMIM ).

Clinical Features

Top most frequent phenotypes and symptoms related to Nevus, Epidermal

  • Global developmental delay
  • Hyperkeratosis
  • Palmoplantar keratoderma
  • Nevus
  • Epidermal acanthosis
  • Acanthosis nigricans
  • Melanoma
  • Melanocytic nevus
  • Hamartoma
  • Curly hair

And another 7 symptoms. If you need more information about this disease we can help you.

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Incidence and onset information

— Currently we don't have prevalence information about this disease (Not enough data available about incidence and published cases.)
No data available about the known clinical features onset.

Alternative names

Nevus, Epidermal Is also known as nevus, keratinocytic, nonepidermolytic.

Researches and researchers

Currently, we don't have any information about doctors, researches or researchers related to this disease. Please contact us if you would like to appear here.


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Nevus, Epidermal Recommended genes panels

Panel Name, Specifity and genes Tested/covered
Achondroplasia Mutation Panel.

By Baylor Miraca Genetics Laboratories (United States).

FGFR3
Specificity
100 %
Genes
25 %
PreSeek Non-invasive Prenatal Gene Sequencing Screen.

By Baylor Miraca Genetics Laboratories (United States).

RIT1, BRAF, SMC1A, SOS1, SOS2, CDKL5, SYNGAP1, TSC1, TSC2, HDAC8, NSD1, CBL, SHOC2, CHD7, COL1A2, SMC3, NIPBL, FGFR2, FGFR3, HRAS , (...)

View the complete list with 9 more genes
Specificity
11 %
Genes
75 %
Epilepsy Advanced Sequencing and CNV Evaluation - Developmental Brain Malformations.

By Athena Diagnostics Inc (United States).

SHH, STIL, SIX3, TUBA8, SLC25A19, DEAF1, ARFGEF2, RAB3GAP1, CENPJ, NDE1, FKRP, ARX, ASPM, POMGNT1, POMT2, TUBA1A, COL4A1, CPT2, WDR62, DCX , (...)

View the complete list with 20 more genes
Specificity
3 %
Genes
25 %
Epilepsy Advanced Sequencing and CNV Evaluation.

By Athena Diagnostics Inc (United States).

SCN1A, SCN1B, SCN2A, SCN3A, SCN5A, SCN8A, SCN9A, SHH, ST3GAL3, ST3GAL5, STIL, SIX3, SLC2A1, SLC35A2, SLC6A1, SLC6A8, SLC9A6, SMC1A, KDM5C, SMS , (...)

View the complete list with 214 more genes
Specificity
1 %
Genes
25 %
Hearing Loss Advanced Sequencing and CNV Evaluation.

By Athena Diagnostics Inc (United States).

BCS1L, ROR1, SALL1, SEMA3E, SIX1, SIX5, SLC12A1, SLC19A2, SLC22A4, SNAI2, SMPX, SOX10, TBX1, TCOF1, TECTA, TFAP2A, TIMM8A, TJP2, TMPRSS3, USH1C , (...)

View the complete list with 149 more genes
Specificity
1 %
Genes
25 %
Non-immune Hydrops Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

RIT1, RPL11, RPL35A, RPL5, RPS10, RPS17, RPS19, RPS24, RPS26, SEC23B, SLC17A5, BRAF, SMPD1, SOS1, SOS2, SOX18, UROS, CBL, SHOC2, ALG9 , (...)

View the complete list with 66 more genes
Specificity
4 %
Genes
75 %
NGS Skeletal Dysplasia Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

SLC26A2, SOX9, TRPV4, COL1A2, COMP, FGFR3, FLNA, HSPG2
Specificity
13 %
Genes
25 %
FGFR3-related disorders.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

FGFR3
Specificity
100 %
Genes
25 %

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Sources and references

You can check the following sources for additional information.

OMIM Rare Disease Search Engine

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