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In this case study, a six-year-old girl was diagnosed with isolated adrenarche, linked to premature adrenal maturation, with increased dehydroepiandrosterone sulfate and axillary and pubic hair growth, and will require long-term monitoring due to increased risks of conditions like polycystic ovary syndrome and cardiovascular diseases.

This chapter reviews various hair disorders, focusing on androgenetic and scarring alopecias, and discusses management strategies, but presents no new research findings.

This report presents a rare case of suspected 3β HSD deficiency in an adult female with symptoms like male pattern hair loss and low testosterone, suggesting a non-classical presentation.

This study assessed hair whorl characteristics in domestic dogs and found that simple whorls predominate, with tufted whorls more common in specific regions like elbows and chests, influenced by factors such as coat traits and source.

This study found that keratin phenotypes were consistent across different types of hair from the same individual, allowing for successful keratin typing following ABH blood group determination.

This study found that covalently binding antimicrobial agents to hair shafts provided antibacterial activity against dandruff and odor-associated bacteria, which remained effective even after several washes.

This study found considerable variation in hair shaft proteomic profiles among Caucasian, African-American, Kenyan, and Korean subjects, with individual and site-specific differences observed.

This study used proteomic profiling to reveal significant individual and site-specific differences in human hair shaft proteins, which may improve the differentiation of hair based on ethnic origin and individual identity.

This study observed that testosterone metabolism and androgen receptor localization differ significantly across body sites, with beard hair follicles showing distinct characteristics compared to occipital scalp hair follicles.

This case report describes successful treatment of trichomycosis axillaris, a bacterial infection of hair shafts, using shaving and topical antibiotics, resulting in complete odor elimination within weeks.

This report describes a rare case of Graham-Little–Piccardi–Lassueur syndrome in a 46-year-old male, highlighting its typical features such as scarring alopecia and lichenoid follicular eruptions.

In this study, the researchers observed that treatment with intralesional and topical corticosteroids, finasteride, and minoxidil may stop the progression of frontal fibrosing alopecia in postmenopausal and premenopausal women.

This study found that dermal papilla cells from beard and axillary hair follicles can produce androgen-dependent factors that stimulate proliferation in adjacent follicular epithelial cells under testosterone influence.

This article discusses cultural perspectives on hirsutism and hypertrichosis and reports no new clinical results.

In this case report, tofacitinib led to significant improvement in arthritis and partial improvement in alopecia for a female patient with systemic lupus erythematosus, with no observed adverse effects.

This case report describes a 58-year-old woman whose virilization symptoms were linked to a steroid tumor of the ovary, emphasizing the importance of prompt diagnosis and treatment to improve her quality of life.

This study strongly suggests that a distinct form of hereditary localized alopecia in a Chinese family is linked to a novel locus on chromosome 2p25.1–2p23.2.

In this study, combining hair transplantation with platelet-rich plasma was found to be more effective than hair transplantation alone in reducing hair loss, improving hair regeneration, and decreasing skin lesions in patients with androgenic alopecia.

This study suggests that pili annulati is likely more common than traditionally thought, highlighting the importance of recognizing its characteristic clinical and trichoscopic features for accurate diagnosis.

This study reviewed cases of Graham–Little-Piccardi–Lassueur syndrome and found that topical treatments were generally ineffective, while systemic therapies like prednisone, hydroxychloroquine, and isotretinoin led to partial hair regrowth and disease stabilization, highlighting the importance of early diagnosis and systemic therapy to improve outcomes.

This case report details a rare instance of granulomatosis disciformis chronica et progressiva affecting both skin and lymph node tissue in a 31-year-old man.

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A gene deletion in DSG4 causes sparse hair in some Pakistani families.

This case report identifies a novel association between Graham Little–Piccardi–Lassueur syndrome and complete androgen insensitivity syndrome, suggesting the influence of androgens in the alopecias accompanying the former may be limited.

This study found that 76.19% of patients with acquired hypoparathyroidism had mucocutaneous manifestations, with common features including loss of hair and xerotic skin.

This case study reports a 36-year-old man with KID syndrome caused by an N14Y GJB2 mutation, expanding the mutation spectrum of this condition in the Chinese population.

This report presents a case of a 57-year-old woman with APS-4, generalized alopecia, and rheumatoid arthritis, emphasizing the need to screen for other autoimmune disorders in patients with a single organ-specific autoimmune disease.

This study found that testosterone significantly stimulated the proliferation of outer root sheath cells when co-cultured with beard or axillary dermal papilla cells, but not with cells from occipital scalp hair follicles.

Certain skin drugs and topical agents, including some natural extracts and fragrances, can cause allergic reactions. Some hair dyes and extensions, as well as minoxidil, a hair growth treatment, can also cause allergies. Botulinum toxin A can effectively reduce sweat but may have temporary side effects.

This study observes the expression of mRNA for androgen receptor, 5α‐reductase, and 17β‐hydroxysteroid dehydrogenase in human dermal papilla cells.