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Glossary Immune Activation

body's defense system responding to a perceived threat

Immune activation refers to the process by which the body's immune system is triggered to respond to a perceived threat, such as an infection, injury, or foreign substance. This involves the activation of immune cells like T-cells and B-cells, which then work to identify, attack, and eliminate the threat. In the context of alopecia, immune activation can mistakenly target hair follicles, leading to hair loss.

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Research

5 / 1000+ results

Identifying Key Components and Therapeutic Targets of the Immune System in Hidradenitis Suppurativa with an Emphasis on Neutrophils

research Identifying key components and therapeutic targets of the immune system in hidradenitis suppurativa with an emphasis on neutrophils

16 citations , September 2020 in “British journal of dermatology/British journal of dermatology, Supplement”

This review explores the role of neutrophil recruitment in the inflammation seen in hidradenitis suppurativa and emphasizes potential therapeutic targets within these pathways, but it reports no new clinical results.

Transcriptional Profiling in Alopecia Areata Defines Immune and Cell Cycle Control Related Genes Within Disease-Specific Signatures

research Transcriptional profiling in alopecia areata defines immune and cell cycle control related genes within disease-specific signatures

61 citations , September 2010 in “Genomics”

This study found distinct gene expression profiles in alopecia areata-affected skin, suggesting T-cell mediated immune responses and unique gene profiles between different stages of the disease.

research 1338 Epidermal growth factor receptor protects from immune privilege collapse and scarring hair follicle destruction

April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology”

This study reported that in mouse models, deletion of EGFR resulted in stem cell hyper-proliferation followed by apoptosis, leading to scarring alopecia, and implicated EGFR's role in maintaining hair follicle quiescence and immune privilege during inflammation.

research Environmental Modulation of JAK3-Mediated Immune Dysregulation in Alopecia Areata

November 2025 in “Scholarly Commons (Embry–Riddle Aeronautical University)”

This review discusses how urban air pollutants may influence the regulation of JAK3 signaling in alopecia areata and reports no new experimental results; the authors integrate existing data to map potential pathways and biomarkers.

research Type 1 interferon signature and cytotoxic T lymphocyte activation targeted against sweat ducts in inflammatory acquired idiopathic generalized anhidrosis

6 citations , June 2023 in “Journal of the European Academy of Dermatology and Venereology”

This study observed that inflammatory AIGA is associated with sweat duct inflammation and sweat coil atrophy, while non-inflammatory AIGA involves only sweat coil atrophy, suggesting distinct pathological features between the two.

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Community Join

5 / 261 results

community Hair loss after COVID or vaccination isn’t “made up” but it’s also not what TikTok makes it sound like

2 upvotes 8 months ago

COVID and COVID vaccination can trigger hair loss, primarily telogen effluvium, due to stress and immune system activation. Proper diagnosis and addressing factors like nutrition and stress are crucial for recovery.

community PP405 Won't Work Long Term: Hair Follicle Damage Due to Abuse of the ISR System

67 upvotes 11 months ago

PP405 may damage hair follicles if used long-term, suggesting cycling might be necessary. Combining it with finasteride could help maintain hair growth.

community PP405: The Ultimate Hair Loss Drug for Complete Hair Growth

211 upvotes 1 year ago

PP405 is a new hair loss treatment in phase 2 trials that may promote hair growth by increasing lactate production and activating hair follicle stem cells. It could potentially replace hormone-disrupting treatments like Minoxidil and finasteride.

community How is it possible for someone to be a non responder to ORAL minoxidil?

in Minoxidil 66 upvotes 2 years ago

Some individuals do not respond to oral minoxidil for hair loss, despite it generally working by improving blood flow to hair follicles. Factors like metabolism, drug interactions, and individual variations in the drug's activation may influence its effectiveness.

community My Theory Of Androgenic Alopecia

16 upvotes 9 months ago

Hair loss is linked to cellular physiology and the IGF-1 to TGF-B1 ratio, not just androgen sensitivity. The theory lacks evidence, while finasteride and minoxidil are effective treatments.

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Learn

3 / 801 results

learn Osteopontin

signaling protein that, when suppressed, may grow hair by reducing inflammation and stem cell loss

learn Stem Cell Factor

learn Baricitinib

JAK inhibitor that reduces inflammation and immune attacks on hair follicles, leading to potential hair regrowth, especially in alopecia areata cases

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Clinics

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33
Hair Transplant
Australian Hair & Scalp Clinics-Hair Regrowth by Herbal Follicular ActivationMelbourne, VIC · AU

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