April 2016 in “The journal of investigative dermatology/Journal of investigative dermatology” The back of the scalp has more nerve fibers than the front, which may explain why some people feel more sensitivity there.
245 citations
,
March 2012 in “Journal of The American Academy of Dermatology” Dermatoscopy is useful for identifying different hair and scalp conditions and can reduce the need for biopsies.
184 citations
,
November 2014 in “Developmental Cell” Hair follicle dermal stem cells are key for regenerating parts of the hair follicle and determining hair type.
3 citations
,
February 2019 in “Disease Markers” The index to ring finger ratio may indicate disease severity in female ankylosing spondylitis patients, but not in males.
52 citations
,
March 2016 in “JAMA dermatology” Patients with PCOS rate their hirsutism higher than clinicians, and these self-ratings are more closely related to their quality of life and risk of depression.
18 citations
,
April 2018 in “Biotechniques/BioTechniques” A new method was developed to extract and analyze proteins from very short human hairs.
February 2026 in “Psychoneuroendocrinology” Hair cortisol concentration partly reflects HPA axis regulation but doesn't capture all its complexities.
12 citations
,
March 2000 in “Clinical Chemistry” Chronic DHEA supplementation slightly increases testosterone in hair but stays within safe limits.
56 citations
,
January 1999 in “The Analyst” The method accurately measures certain steroids in human hair, showing different levels in males and females.
33 citations
,
January 2017 in “Conservation physiology” Measuring reproductive hormones in brown bear hair could help identify their sex and reproductive state, but better collection methods or lab techniques are needed.
2 citations
,
January 2020 in “Evidence-based Complementary and Alternative Medicine” Hataedock treatment improved skin health and reduced atopic dermatitis symptoms by enhancing the skin barrier and reducing inflammation.
Dermoscopy helps diagnose and differentiate various hair and scalp conditions.
31 citations
,
December 2016 in “Anais Brasileiros de Dermatologia” DHEA reduction may be linked to frontal fibrosing alopecia, but more research is needed.
July 2022 in “The journal of investigative dermatology/Journal of investigative dermatology” Scientists created a detailed map of gene activity in different parts of human hair follicles.
33 citations
,
March 2006 in “Seminars in cutaneous medicine and surgery” The document explains how to identify different hair problems using a microscope.
August 1994 in “Journal of dermatological science” Mouse hair cells respond to male hormones by growing less, and this can be stopped by certain blockers.
41 citations
,
June 2006 in “Journal of Investigative Dermatology” Beard and scalp hair cells have different gene expressions, which may affect beard growth characteristics.
4 citations
,
December 1989 in “The Journal of Dermatology” Human hair proteins have similar cysteine and glycine levels to skin proteins.
A new image-based method improves accuracy in measuring hair loss in mice.
2 citations
,
January 2022 in “Clinical, Cosmetic and Investigational Dermatology” The refined wash test is a reliable way to measure daily hair loss and can tell the difference between different types of hair loss.
September 2009 in “Annales D Endocrinologie” DHEA supplementation may improve quality of life, neuropsychological functions, and sexual satisfaction in individuals with adrenal insufficiency, but more research is needed to confirm its safety and effectiveness.
7 citations
,
November 2007 in “PubMed” Turkish women with female pattern hair loss have lower hair density, and visual counting is more effective than digital image analysis for detecting this.
February 2023 in “Journal of Pre-Clinical and Clinical Research” Dhathri Hair Care Plus herbal oil helps reduce hair loss, treat scalp conditions, and slow down hair greying.
May 2021 in “Journal of the Endocrine Society” A woman's hair loss and other symptoms were due to a rare hormone deficiency treatable with steroids.
March 2004 in “Journal of The American Academy of Dermatology” Patients with SLE experienced non-scarring hair loss with fewer hair follicles, and DIF did not help identify lupus.
22 citations
,
May 1986 in “Clinics in endocrinology and metabolism” Certain finger length ratios and body hair patterns may predict side effects from birth control pills in women.
November 2022 in “Bioengineering” The method can test hair growth products using a lab-made hair-like structure that responds to known treatments.
3 citations
,
December 2021 in “Skin research and technology” Higher hair luminosity and shine mean higher perceived transparency.
31 citations
,
February 2020 in “BioMed Research International” Thai people's hair density decreases with age and varies by scalp area, but hair thickness stays the same regardless of age or scalp area.
April 2017 in “Journal of Investigative Dermatology” Sweat glands and hair follicles are determined by opposing signals, with BMPs promoting sweat glands and blocking BMPs leading to hair follicles.