Abstract
Chronic pruritus carries a significant burden of disease and is associated with a negative impact on quality of life. African Americans are disproportionately burdened by chronic pruritic disorders, including but not limited to atopic dermatitis, prurigo nodularis, inflammatory scalp dermatoses, pathologic scarring, and HIV-related dermatoses. Racial differences in skin structure and function may contribute to the pathogenesis of itch in African Americans. Itch perception and response to treatment in African Americans remain understudied and not well understood. As such, there is a large unmet need with regard to the knowledge and management of pruritus in African Americans. This review highlights notable differences in the epidemiology, pathophysiology, genetic predisposition, clinical presentation, and response to treatment for select pruritic skin conditions. By addressing itch as an unmet need in African Americans, we hope to improve patient outcomes and lessen disparities in dermatologic care.
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Abbreviations
- αMSH:
-
Alpha-melanocyte stimulating hormone
- AA:
-
African American
- AD:
-
Atopic dermatitis
- AKN:
-
Acne keloidalis nuchae
- CCCA:
-
Central centrifugal cicatricial alopecia
- COMT:
-
Catecholamine methyl-transferase
- EASI:
-
Eczema Area and Severity Index
- FLG:
-
Filaggrin
- GPCR:
-
G-protein coupled receptor
- hBD:
-
Haplotype of beta defensins
- HF:
-
Hair follicle
- HSF:
-
Hypertrophic scar formation
- IL:
-
Interleukin
- IL-4Rα:
-
Interleukin 4 receptor alpha
- IRS:
-
Inner root hair sheath
- MC1R:
-
Melanocortin-1-receptor
- MRGPR:
-
Mas-related G protein-coupled receptor
- NAMCS:
-
National ambulatory medical care survey
- NK1:
-
Neurokinin 1
- NGF:
-
Nerve growth factor
- ORS:
-
Outer root hair sheath
- PADI3:
-
Peptidyl arginine deiminase type III
- PAR-2:
-
Protease activated receptor-2
- PBP:
-
Post-burn pruritus
- PGE2:
-
Prostaglandin E2
- PN:
-
Prurigo nodularis
- PPE:
-
Papular pruritic eruption
- RNA:
-
Ribonucleic acid
- SCORAD:
-
SCORing atopic dermatitis
- SD:
-
Seborrheic dermatitis
- TEWL:
-
Transepidermal water loss
- Th:
-
Helper T cell
- TrkA:
-
Tropomyosin receptor kinase-A
- TRPV1:
-
Transient receptor vanilloid subtype-1
- UVB:
-
Ultraviolet B
- WHO:
-
World Health Organization
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Giuseppe Ingrasci: None. Nour El-Kashlan: None. Andrew Alexis: serves as a principal investigator for clinical trials and received research grants from Menlo, Galderma, LEO, Novartis, Sanofi-Regeneron, Amgen. Has received honoraria for serving as a consultant/on the advisory board for Menlo, Galderma, LEO, Novartis, Sanofi-Regeneron, Dermavant. Gil Yosipovitch: is a consultant for: Pfizer, Galderma, Sanofi Regeneron, Kiniksa, Trevi, Eli Lilly, Novartis, GSK, Leo and Bellus, has received grant/research support from Leo Pharma, Pfizer, Novartis and Kiniksa, Sanofi, Regeneron.
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Ingrasci, G., El-Kashlan, N., Alexis, A. et al. Chronic itch in African Americans: an unmet need. Arch Dermatol Res 314, 405–415 (2022). https://doi.org/10.1007/s00403-021-02255-6
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DOI: https://doi.org/10.1007/s00403-021-02255-6