January 2009 in “Journal of musculoskeletal pain” A patient got Herpes zoster after a knee injection, possibly due to the injection's trauma, but more evidence is needed.
RNase L hinders hair follicle regeneration by altering immune signals.
November 2022 in “Journal of Investigative Dermatology” Growth hormone-releasing hormone (GHRH) boosts hair growth and human scalp hair follicles have their own growth hormone system.
14 citations
,
May 2008 in “Journal of Visualized Experiments” Mouse epidermal neural crest stem cells can become various cell types and are easily obtained from hair follicles.
26 citations
,
December 2020 in “Indian Journal of Plastic Surgery” Understanding facial anatomy and early management are key to preventing and treating complications from injectable fillers.
80 citations
,
September 2007 in “Cell Cycle” Stem cells in hair follicles can become various cell types, including neurons.
April 2026 in “Journal of Dermatology Research” The skin communicates with the nervous system, and targeting neurohormones like melatonin and oxytocin could help treat skin issues.
April 2026 in “Journal of Investigative Dermatology” Mechanotransduction aids healthy wound healing by promoting specific fibroblasts.
19 citations
,
November 2014 in “Journal of Comparative Physiology A” Spider joint hair sensilla are adapted to sense movement during walking.
September 2019 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair follicles repair 3D injuries using a 2D healing process.
24 citations
,
September 2002 in “Dermatologic Surgery” The study found that hair follicles are above muscle connections in the scalp, which may help protect stem cell areas.
5 citations
,
December 2022 in “Toxins” Neurotoxins can affect neurotransmitter release and have potential in treating muscle, pain, and cancer conditions, but more research is needed on how they work.
March 2020 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” The dermal sheath's contraction is crucial for hair follicle regression and stem cell relocation.
January 2016 in “Hair transplant forum international” Hair transplant surgery can sometimes lead to nerve pain in the face.
12 citations
,
July 2019 in “Veterinary Dermatology” Nestin-expressing progenitor cells become outer root sheath keratinocytes.
8 citations
,
April 2024 in “The Journal of Dermatology” Neurogenic inflammation may play a role in hair loss in alopecia areata.
10 citations
,
October 2020 in “Frontiers in Cell and Developmental Biology” Wounds can regenerate hair in young mice, but this ability declines with age, offering insights for improving tissue regeneration in the elderly.
88 citations
,
January 2004 in “Journal of Neuroscience” Neurosteroids regulate synaptic inhibition in the spinal cord and may help manage spinal pain.
26 citations
,
March 2017 in “Aesthetic plastic surgery” Accidental injection of hyaluronic acid caused temporary hair loss and skin damage, but treatment restored hair and healed the skin.
8 citations
,
October 2016 in “Experimental dermatology” Hair follicles may help teach the immune system to tolerate new self-antigens, but this can sometimes cause hair loss.
109 citations
,
November 2011 in “Nature Neuroscience” 104 citations
,
December 2004 in “Journal of Neurochemistry” Androgens help motor neurons grow by increasing neuritin.
October 1933 in “Experimental Biology and Medicine” Epinephrine injections can cause severe skin reactions like hair loss and necrosis.
September 2025 in “Digital Commons - RU (Rockefeller University)” Nfib in hair follicle stem cells boosts melanocyte stem cell growth and differentiation.
22 citations
,
June 2008 in “Experimental Dermatology” Heparanase is essential for hair follicle health and inner root sheath differentiation.
October 2025 in “Clinical Cosmetic and Investigational Dermatology” Targeting specific cell interactions may help treat skin fibrosis.
1 citations
,
July 2024 in “Journal of Investigative Dermatology” Immune cells boost stem cell activity in hairy moles, causing more hair growth.
46 citations
,
March 2015 in “Regeneration” Mice can grow new hair follicles after skin wounds through a process not involving existing hair stem cells, but requiring more research to understand fully.
1 citations
,
October 2022 in “Scientific reports” Nestin identifies specific progenitor cells in hair follicles that can become outer root sheath cells.
76 citations
,
March 2005 in “Journal of Molecular Medicine” Certain mice without specific receptors or mast cells don't lose hair from stress.