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540-570 / 1000+ resultsresearch Quantifying variation in human scalp hair fiber shape and pigmentation
African hair is curled, Asian hair is thick, European hair is lighter, and chemical methods help identify hair color differences.
research Isolated patchy heterochromia with pili annulati features on light and electron microscopy
Isolated patchy heterochromia with pili annulati can occur without other health issues.
research A Unique Acquired Athletic Dermatologic Condition in a Half Marathon Participant: An Autobiographical Case Report of Sports-Associated Clothing Related Axillary Tangled Clumped Hairs (SCRATCH)
A runner developed tangled armpit hairs from shirt friction, preventable by shaving or wearing smooth shirts.
research The walking dead: sequential nuclear and organelle destruction during hair development
Cells in hair die by breaking down their DNA and mitochondria as they form keratin.
research A Unique Case of Trichorrhexis Nodosa—"Bamboo Hairs"
A 4-year-old girl has a rare hair condition causing fragile, short hair.
research Bubble hair
Bubble hair deformity may be caused by hair shaft trauma and can improve with gentle hair care.
research Complex Hair Cycle Domain Patterns and Regenerative Hair Waves in Living Rodents
Mice hair growth patterns get more complex with age and can change with events like pregnancy or injury.
research Different Trichoscopic Features of Tinea Capitis and Alopecia Areata in Pediatric Patients
Trichoscopy can effectively tell apart tinea capitis and alopecia areata in children by looking for specific hair shapes.
research Giant Axonal Degeneration: Scanning Electron Microscopic and Biochemical Study of Scalp Hair
The patient's hair had unique damage and a lower sulfur-to-nitrogen ratio compared to relatives, but not compared to healthy controls.
research MOLECULAR AND CELLULAR BASIS OF EXOGEN AND ANAGEN INDUCTION
Hair growth and shedding involve specific cell changes and gene roles.
research Alopecia areata susceptibility variant identified by MHC risk haplotype sequencing reproduces symptomatic patched hair loss in mice
A gene variant causes patched hair loss in mice, similar to alopecia areata in humans.
research Central Centrifugal Cicatricial Alopecia (CCCA)
CCCA is a common hair loss condition in African American women, often inherited and influenced by hairstyling, with unique scalp features detectable by special tools.
research Modeling Oxidative Stress-Linked Telogen Effluvium Using Monte Carlo Simulation of Published Trichoscopy Norms and Cannabis Exposure Distributions
Higher cannabis exposure may lead to increased hair loss.
research Isolated long white eyelash: An underrecognized trichologic finding
A single long white eyelash is a rare but benign condition.
research A Homozygous Nonsense Mutation in the Zinc-Finger Domain of the Human Hairless Gene Underlies Congenital Atrichia
A specific gene mutation causes complete hair loss without other health issues.
research Mapping cell dynamics in human ex vivo hair follicles suggests pulling mechanism of hair growth
Hair growth may involve a pulling force from the outer root sheath.
research Inherited Hairlessness: A Case Study of Familial Congenital Atrichia
The document concludes that the girl's hairlessness is likely inherited from her parents.
research Mechanism of cannabinoid incorporation in hair
Cannabinoids like THC and THCA get into hair through skin oils, not hair color.
research Structural Transition of Trichocyte Keratin Intermediate Filaments During Development in the Hair Follicle
research Hair Analysis as an Environmental Health Bioindicator: A Case-Study using Pelage of the California Ground Squirrel (Spermophilus beecheyi)
California Ground Squirrel hair can indicate environmental health by showing element accumulation.
research Ruby laser-assisted hair removal: an ultrastructural evaluation of cutaneous damage
research Hair
Hair analysis can detect drug use but is costly and interpretation is complex.
research The frictional properties of wool and related hair fibers.
research UPLC-MS/MS method for the simultaneous quantification of caffeine and illicit psychoactive drugs in hair using a single-step high-speed grinding extraction – Insights into a cut-off value for caffeine abuse
The conclusion is that a new method can measure caffeine and drugs in hair, finding caffeine abusers have 70 times more caffeine than normal, with a proposed cut-off value for abuse.
research Rat Whiskers, Follicle Transection, and Hair Transplantation
Transplanting rat whisker follicles can lead to successful hair growth after cutting them.
research Human hair production by scalp samples grafted onto nude mice. Biochemical data on normal human hair and the genetic defect trichothiodystrophy
Grafted human scalp samples on mice can produce human hair, useful for studying hair genetics.
research Exploring Mechanical Niches Identified by Hair Follicle Compression and How These Transduce Proliferation and Differentiation Cues in Epidermally Derived cells.
Less stiff collagen promotes higher cell growth in hair follicles.
research Hair re-growth effect of Silicon dioxide in C57BL/6 Mice
research Trichoblastomas derived from the facial skin with tactile hair in aged house musk shrews (Suncus murinus)
Trichoblastomas in aged house musk shrews show unique features and may involve serum amyloid A in inflammation.