» Articles » PMID: 34518894

Pruritus in Keloid Scars: Mechanisms and Treatments

Overview
Specialty Dermatology
Date 2021 Sep 14
PMID 34518894
Citations 19
Authors
Affiliations
Soon will be listed here.
Abstract

Keloids are scars that extend beyond the margins of an insulting cutaneous injury. Keloids are often thought to be primarily a cosmetic issue, as they are typically quite raised and pigmented. However, these scars also present with functional symptoms of pruritus and pain that significantly impact quality of life. The symptom of pruritus is frequently overlooked by dermatologists, and treatments are often primarily focused on the gross appearance of the scar. This review describes the prevalence and importance of pruritus in keloids. In addition, the putative mechanisms underlying the development of keloid pruritus, which include neuronal and immunological mechanisms, are discussed. Furthermore, this review describes keloid treatments that have been shown to reduce pruritus, treatments that specifically target the itch, and emerging therapies.

Citing Articles

Lapatinib ameliorates skin fibrosis by inhibiting TGF-β1/Smad and non-Smad signaling pathway.

Wang Y, Zhang T, Song H, Yang C Sci Rep. 2025; 15(1):8444.

PMID: 40069312 PMC: 11897129. DOI: 10.1038/s41598-025-92687-1.


USP37-stabilized SALL4 promotes the keloid formation by PI3K/AKT pathway.

Fang S, Wang Z, Xu J, Xu M, Zhou J, Zhang Y Sci Rep. 2025; 15(1):7553.

PMID: 40038378 PMC: 11880302. DOI: 10.1038/s41598-025-91776-5.


Tension-sensitive HOX gene expression in fibroblasts for differential scar formation.

Kang M, Ko U, Oh E, Kim H, Chung H, Shin J J Transl Med. 2025; 23(1):168.

PMID: 39930512 PMC: 11808978. DOI: 10.1186/s12967-025-06191-1.


The Complex Epidermal and Dermal Milieu of M2 Macrophages/IL-31/IL-31RA Network May Play a Role in Keloid Associated Pruritus.

Song J, Yang J, Yan Y, Liu T, Fan J, Jiao H Aesthetic Plast Surg. 2025; .

PMID: 39915309 DOI: 10.1007/s00266-025-04692-4.


SPARC activates p38γ signaling to promote PFKFB3 protein stabilization and contributes to keloid fibroblast glycolysis.

Liu Y, Zhang W, Lin N, Yang Z, Liu Y, Chen H Inflamm Regen. 2024; 44(1):44.

PMID: 39482755 PMC: 11529245. DOI: 10.1186/s41232-024-00357-y.


References
1.
Kanda N, Watanabe S . Histamine enhances the production of nerve growth factor in human keratinocytes. J Invest Dermatol. 2003; 121(3):570-7. DOI: 10.1046/j.1523-1747.2003.12428.x. View

2.
Xiao Z, Zhang F, Lin W, Zhang M, Liu Y . Effect of botulinum toxin type A on transforming growth factor beta1 in fibroblasts derived from hypertrophic scar: a preliminary report. Aesthetic Plast Surg. 2009; 34(4):424-7. DOI: 10.1007/s00266-009-9423-z. View

3.
Cedeno-Laurent F, Singer E, Wysocka M, Benoit B, Vittorio C, Kim E . Improved pruritus correlates with lower levels of IL-31 in CTCL patients under different therapeutic modalities. Clin Immunol. 2015; 158(1):1-7. PMC: 4420663. DOI: 10.1016/j.clim.2015.02.014. View

4.
Wilgus T, Wulff B . The Importance of Mast Cells in Dermal Scarring. Adv Wound Care (New Rochelle). 2014; 3(4):356-365. PMC: 3985512. DOI: 10.1089/wound.2013.0457. View

5.
Espana A, Solano T, Quintanilla E . Bleomycin in the treatment of keloids and hypertrophic scars by multiple needle punctures. Dermatol Surg. 2001; 27(1):23-7. View