March 2023 in “Journal of Cosmetic Dermatology” This study suggests that capillarectasia, or dilation of scalp capillaries, may help distinguish COVID-19-associated telogen effluvium from classic acute telogen effluvium.
May 2024 in “bioRxiv (Cold Spring Harbor Laboratory)” This study found that hair with lower levels of keratin associated proteins reduced the foreign body response in mouse subcutaneous implant tests compared to hair with higher keratin levels.
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February 2020 in “Scientific reports” This study found that telocytes in human scalp tissue were located around hair follicles and glands and may be involved in skin regeneration and homeostasis.
June 2026 in “Morphology” This study found that IBA-1-immunopositive macrophages in rat skin during wound healing show varied morphometric characteristics and peak in numbers at 2, 6, and 15 days post-injury.
In this retrospective analysis, researchers evaluated 54 patients undergoing soft tissue reconstruction for scalp and forehead defects and reported excellent aesthetic outcomes with local flaps for defects up to 50 cm², while larger defects typically required additional skin grafting.