Cited by 112Dermatology and Skin DiseasesMast cells and histaminePain Mechanisms and Treatments

Pruritus in allergy and immunology

Open access
Yang, Ting-Lin B., Kim, Brian S.·2019·Journal of Allergy and Clinical Immunology

Abstract

Although evolutionarily conserved to expel ectoparasites and aid in the clearance of toxins and noxious environmental stimuli from the host, the type 2 immune response can become pathologic in the setting of a variety of allergic disorders. Itch can be a behavioral extension of type 2 immunity by evoking scratching and, in the setting of disease, can become chronic and thus highly pathologic as well. Classically, our understanding of itch mechanisms has centered around the canonical IgE-mast cell-histamine axis. However, therapies aimed at blocking the histaminergic itch pathway have been largely ineffective, suggesting the existence of nonhistaminergic itch pathways. Indeed, recent advances in itch biology have provided critical new insight into a variety of novel therapeutic avenues for chronic itch in the setting of a number of allergic disorders. Here we highlight how these new developments will likely inform the problem of pruritus in a variety of well-established and emerging conditions in the field of allergy.

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Crossref · 10.1016/j.jaci.2019.06.016

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  • The itch-scratch reflex contributes to further disruption of epidermal barrier function, keratinocyte damage, and activation of local dendritic cells, which further activate the adaptive immune response and subsequent inflammatory reaction.

    “The itch-scratching reflex contributes to further disruption of the epidermal barrier function, keratinocyte damage and activation of local dendritic cells, which in turn will further activate the adaptive immune response and subsequent inflammatory reaction29,181,182.”

    From Atopic dermatitis: an expanding therapeutic pipeline for a complex disease (2022) · cites this paper as [182]

    The Prurigo Nodularis section (page not available) says itch is believed to drive rash development and describes chronic scratching, supporting a general link between itch and skin lesions. The Atopic Dermatitis section discusses barrier-derived cytokines and immune inflammation, but the copy does not establish that scratching damages keratinocytes or activates dendritic cells, which then amplify the adaptive immune response. (LLM, conf=0.74)

    Experimental — accuracy not yet measured
  • Itch mechanisms are complex, involving multiple mediators that activate peripheral sensory neurons, and they offer several pharmacological targets.

    “The mechanisms that underlie itching sensation are complex, involving multiple mediators that initiate the activation of peripheral sensory neurons. They offer a number of potential targets for pharmacological intervention29,180–182.”

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Research works printed but not linked: 1

  1. [64]Mowad C, Marks J. Allergic Contact Dermatitis. In: Bolognia J, Jorizzo J, Schaffer J, editors. Dermatology 3rd ed. Philadelphia: Elsevier Saunders; 2012.

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Authors
Yang, T.-L. B., & Kim, B. S.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Kim, Brian S.
Venue
Journal of Allergy and Clinical Immunology
Publisher
Elsevier BV
Published
2019-08
Volume
144
Issue
2
Pages
353-360
ISSN
0091-6749 (ISSN-L)
OpenAlex
W2966029164
Cited by
112
References
68
Citations by year
2026: 9 · 2025: 11 · 2024: 15 · 2023: 23 · 2022: 24 · 2021: 21 · 2020: 8 · 2018: 1
FWCI
2.57
Type
journal article
Language
en
Open access
Locations
  • Journal of Allergy and Clinical Immunology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Doris Duke Charitable Foundation
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases
Topics
  • Health Sciences › Medicine › Dermatology › Dermatology and Skin Diseases
  • Life Sciences › Immunology and Microbiology › Immunology › Mast cells and histamine
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
Keywords
pruritus, chronic pruritus, Th2 immune response, allergic diseases, histamine, IgE, mast cells, scratching behavior, itch mechanisms, antipruritic therapy
MeSH terms
Animals, Histamine, Humans, Hypersensitivity, Immunoglobulin E, Mast Cells, Pruritus

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