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GlossaryImmunological Factors

components of the immune system that defend against threats

Immunological factors, also known as immune factors, refer to components of the immune system that play a role in defending the body against infections, diseases, and foreign substances. These include various cells (like T-cells and B-cells), antibodies, cytokines, and other molecules that identify and neutralize harmful agents. In the context of hair and alopecia, immunological factors can influence conditions like alopecia areata, where the immune system mistakenly attacks hair follicles, leading to hair loss.

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research Capillary Impacts of Covid-19: The Link Between Acute Telogen Effluvium and Alopecia Areata - An Integrative Review

February 2024 in “Recima21”

Covid-19 can cause hair loss due to immune and psychological factors.

research From Targets to Treatments: Bridging Autoimmune Research to Advance Understanding of Alopecia Areata

November 2015 in “The journal of investigative dermatology. Symposium proceedings/The Journal of investigative dermatology symposium proceedings”

Alopecia areata is now understood to be driven by genetic and immune factors.

research Psoriasis in the Limelight: The Remarkable Career of an Old Skin Disease

2 citations, November 2007 in “Clinics in dermatology”

Tofacitinib may be an effective and safe treatment for adolescent alopecia areata.

research Global Burden of Alopecia Areata and Associated Diseases: A Trend Analysis From 1990 to 2021

February 2025 in “PubMed”

Alopecia areata cases have increased globally, affecting mostly women aged 30-34, with links to other health issues.

research Review on Alopecia Areata in the Middle East and Africa: Landscape and Unmet Needs

June 2023 in “Dermatology and therapy”

The Middle East and Africa need better data, treatment consensus, and support for Alopecia Areata.

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community My hair stopped falling out after I quit smoking

in Update 60 upvotes 2 months ago

Quitting smoking led to reduced hair loss for the original poster, who also used finasteride and topical minoxidil. Other users shared mixed experiences with smoking and hair loss, with some noticing improvements after quitting and others seeing no change.