research Observation on cadavers and through ultrasonography using a 2 mm needle length for intradermal injections
A 2 mm needle is effective and precise for skin injections.
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research The changing patterns of hair density and thickness in South Korean women with hair loss: clinical office-based phototrichogram analysis
South Korean women with hair loss have lower hair density and thickness compared to healthy women.
research Optical coherence tomography examination of hair
OCT can effectively examine and reveal details about human hair and scalp conditions.
research Diagnosis and differential diagnosis of tertiary androgenetic alopecia with severe alopecia areata based on high‐resolution MRI
High-resolution MRI can distinguish between tertiary androgenetic alopecia and severe alopecia areata by measuring scalp and tissue thickness and hair follicle depth.
research Implications of a Clinically Ignored Site of Acanthosis Nigricans: The Knuckles
Knuckle Acanthosis Nigricans is common in Latin American youth and may indicate early insulin resistance, especially in those with normal weight.
research Age, lifestyle and self‐perceptions of hair: Is there an association with hair diameter and tensile properties?
Older age and certain lifestyles are linked to thinner, weaker hair, while how you see your hair relates to its thickness.
research Distinguishing Androgenetic Alopecia From Chronic Telogen Effluvium When Associated in the Same Patient
Shorter, thinner hairs indicate AGA, while longer, thicker hairs suggest CTE; counting and measuring shed hairs helps diagnose hair loss type.
research Optical coherence tomography-assisted diagnosis of follicular keratosis of the chin
OCT can non-invasively diagnose follicular keratosis and other hair follicle disorders.
research Characteristics of nonbalding scalp zones of androgenetic alopecia in East Asians
Hair density and thickness decrease in all scalp areas for East Asians with AGA.
research Age‐related changes in scalp biophysical parameters: A comparative analysis of the 20s and 50s age groups
Scalp conditions change with age, affecting hair health.
research Phototrichogram analysis of normal scalp hair characteristics with aging
Hair gets thinner and grayer with age, and density decreases more in men on top and in women on top and back.
research Critical study of hair growth analysis with computer-assisted methods
The Trichoscan system was found to be inaccurate for measuring hair growth, needing better software to be useful.
research Characteristics of the structural components of pilosebaceous follicles in the differential diagnosis of non-cicatricial alopecia
Hair follicles are thinner in alopecia patients, especially in alopecia areata.
research Age-associated thin hair displays molecular, structural and mechanical characteristic changes
Older thin hair is not just thinner but also has different shape, structure, and stiffness.
research Automated digital image analysis (TrichoScan®) for human hair growth analysis: Ease versus errors
TrichoScan often makes mistakes and needs improvement for correct hair growth analysis.
research Evaluation of Two Medium-Depth Peels: Glycolic Acid 70% Versus Trichloroacetic Acid 35%: A Histological and Immunohistochemichal Study on Rat Skin
Both TCA and GA peels effectively improved skin thickness and collagen without significant differences.
research Dermoscopy of Thick Scalp Melanoma: Is It Always an Easy Diagnosis?
Thick scalp melanoma can be hard to diagnose because it often looks like other skin conditions.
research Nailfold capillaroscopic findings in alopecia areatapatients: pilot results
Alopecia areata may be linked to changes in small blood vessels.
research Hair Diameter Variation in Different Vertical Regions of the Occipital Safe Donor Area
Hair thickness decreases from the upper to lower areas of the back of the head, affecting hair transplant results.
research Hair diameter evaluation in different regions of the safe donor area in Asian populations
Different areas of the scalp have varying hair thickness, useful for different types of hair transplant needs.
research Baseline trichoscopic values for afro‐textured hair in indigenous South Africans show lower density and unique features
Afro-textured hair in indigenous South Africans has lower density and unique features, needing specific evaluation standards.
research Acanthosis nigricans in the knuckles: An early, accessible, straightforward, and sensitive clinical tool to predict insulin resistance
Darkened knuckles can be an early sign of insulin resistance.
research Prospective ultramorphological characterization of human hair by optical coherence tomography
OCT can identify hair structures, but chemical treatments can damage them.
research Is There an Association Between Male Alopecia Areata and the Ratio of Second to Fourth Finger Length?
A lower second to fourth finger length ratio may predict male alopecia areata.
research Cryo-Electron Microscopy of Trichocyte (Hard α-Keratin) Intermediate Filaments Reveals a Low-Density Core
Trichocyte filaments have a low-density core and may include proteins for hair structure.
research What women want - quantifying the perception of hair amount: an analysis of hair diameter and density changes with age in caucasian women
Caucasian women's hair appears thickest in their 20s, with perceived thinning after mid-30s due to both decreasing density and diameter.
research Automated digital image analysis (TrichoScan) in male patients with androgenetic alopecia; comparison with manual marking of hairs on trichoscopic images
TrichoScan needs optimization as it underestimated hair density by 38.9% compared to manual counting.
research Trichoscopy I: Non-Cicatricial Alopecia
The document concludes that different patterns of hair thickness and scalp changes can help diagnose types of non-scarring hair loss.
research 861 Frontal fibrosing alopecia (FFA) under dynamic optical coherence tomography (D-OCT)
D-OCT shows increased blood vessel growth in response to tissue damage in Frontal Fibrosing Alopecia and is useful for diagnosis and monitoring.
research Clinicopathological insights into the phenotypic variation of autosomal recessive hypotrichosis/wooly hair by c.736T>A LIPH mutation
The conclusion is that the variation in hair thinness in patients is mostly due to the amount of underdeveloped hairs, and treatments that thicken fine hairs might work for those with mild to severe conditions.