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Cells of the Epidermis

Cells of the Epidermis

The epidermis is made of four or five layers of epithelial cells, depending on its location in the body. From deep to superficial, these layers are the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum.
The cells in all these layers except the stratum basale are called keratinocytes, a type of cell that manufactures and stores the protein keratin. The keratinocytes in the stratum corneum are dead and regularly slough away, being replaced by cells from...

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Related Experiment Video

Updated: Sep 3, 2025

Characterization of In Vitro Differentiation of Human Primary Keratinocytes by RNA-Seq Analysis

Characterization of In Vitro Differentiation of Human Primary Keratinocytes by RNA-Seq Analysis

Published on: May 16, 2020

Granular Parakeratosis: A Case Report.

Qingxia Lin¹, Dong Zhang¹, Weiyuan Ma¹

¹Department of Dermatology, Affiliated Hospital of Weifang Medical University, Weifang, Shandong, People's Republic of China.

Clinical, Cosmetic and Investigational Dermatology

|July 25, 2022

Summary

This summary is machine-generated.

Granular parakeratosis, a rare skin condition, can affect the groin and is treated with topical glucocorticoid and silicone oil creams. Early diagnosis and differentiation from other skin conditions are crucial for effective management.

Keywords:

diagnosis glucocorticoid granular parakeratosis groin keratinization

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Area of Science:

Dermatology
Histopathology

Background:

Granular parakeratosis is an uncommon acquired keratinization disorder.
It typically affects intertriginous areas like the armpit and groin.
Potential triggers include detergents and antiperspirants.

Observation:

A case of granular parakeratosis in the groin of a young man is presented.
Clinical signs included symmetrical bilateral inguinal erythema, dryness, and bran-like desquamation.
No predisposing factors were identified in the patient.

Findings:

Histopathological examination confirmed the diagnosis of granular parakeratosis.
The patient's condition resolved with topical glucocorticoid cream and silicone oil cream.
Granular parakeratosis is a rare skin disease with an unknown etiology.

Implications:

This case highlights the importance of considering granular parakeratosis in the differential diagnosis of inguinal dermatoses.
Prompt diagnosis and appropriate treatment can lead to successful patient outcomes.
Further research into the etiology of granular parakeratosis may improve understanding and management.