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Updated: Oct 25, 2025
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Lymphocyte Isolation from Human Skin for Phenotypic Analysis and Ex Vivo Cell Culture
Published on: April 8, 2016
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Subtypes of atopic dermatitis: From phenotype to endotype
Yoshiki Tokura1, Satoshi Hayano2
1Allergic Disease Research Center, Chutoen General Medical Center, Kakegawa, Japan; Department of Dermatology, Chutoen General Medical Center, Kakegawa, Japan.
Summary
Atopic dermatitis (AD) is a diverse condition with distinct subtypes like extrinsic and intrinsic AD. Understanding these subtypes and endotypes is crucial for developing personalized medicine approaches to treat AD effectively.
Area of Science:
- Dermatology
- Immunology
- Genetics
Background:
- Atopic dermatitis (AD) is a complex skin condition with varied presentations.
- Current classifications include IgE-high extrinsic and IgE-normal intrinsic subtypes.
- Ethnic variations and endotypes offer new insights into AD pathogenesis.
Purpose of the Study:
- To explore the heterogeneity of atopic dermatitis.
- To highlight the importance of classifying AD subtypes and endotypes.
- To emphasize the need for personalized medicine in AD treatment.
Main Methods:
- Review of existing literature on AD classification and endotypes.
- Analysis of clinical and molecular characteristics of different AD subtypes.
- Exploration of ethnic variations in AD presentation.
Main Results:
- AD can be stratified into extrinsic (IgE-high, barrier impaired) and intrinsic (IgE-normal, preserved barrier) subtypes.
- Extrinsic AD is linked to protein/food allergies, while intrinsic AD may involve metal allergy.
- Ethnic differences (e.g., Asian, African American) and endotypes (cytokine profiles, barrier function) reveal distinct AD mechanisms.
Conclusions:
- Stratifying AD into subtypes and endotypes is essential for precision medicine.
- Understanding molecular mechanisms and clinical phenotypes can guide targeted therapies.
- Personalized treatment strategies are needed to address the heterogeneity of atopic dermatitis.
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