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The document describes how to tell different types of non-scarring hair loss apart by looking at hair and scalp tissue under a microscope.

The study reports that Fgf18 and Tgf-β2 signaling pathways in hair follicle stem cells have opposing effects on the timing of hair cycle transitions, influencing the shift from telogen to anagen phases.

This article reviews various types of scarring alopecia, detailing their inflammatory characteristics, but presents no new clinical findings.

This study found that epimorphin is closely linked to developing hair follicles in human fetuses, suggesting it plays a significant role in hair follicle morphogenesis.

This article discusses the role of HR gene mutations in differentiating atrichia with papular lesions from alopecia universalis, but presents no new experimental results.

This article discusses the diagnostic methods for differentiating alopecia areata from similar hair loss conditions and emphasizes the importance of accurate diagnosis, but it reports no new research findings.

This article reviews monilethrix, a rare genetic hair disorder causing brittle hair and alopecia, and emphasizes the need for clinical diagnosis and characteristic tricoscopic findings.

This article discusses folliculitis decalvans as a cicatricial alopecia caused by a neutrophilic immune reaction to microbial biofilms, but it reports no new clinical results.

This chapter reviews the potential of adipose-derived stem cells for skin aging and hair loss treatments but reports no new experimental results; the authors highlight these stem cells as a promising regenerative resource.

This study outlines a technique for hair transplantation that maintains natural hair flow and density by mimicking natural hair direction and angle without accelerating hair loss in the recipient area.

Trichoscopy helps diagnose and manage different types of hair loss effectively.

This review discusses fibrosing alopecia in a pattern distribution, noting its trichoscopic and histopathological features, and emphasizes the importance for dermatologists to recognize and treat it early to prevent irreversible follicular damage.

This review explains the evolution and current techniques of follicular unit transplantation for hair restoration, identifying conditions suitable for surgery and offering guidelines for dermatologists to assess candidate suitability, focusing on male and female pattern hair loss.

This study provides a framework for understanding different types of alopecias based on immune privilege collapse at specific follicular sites, revealing distinct patterns in immune effector programs and stromal influences depending on the alopecia type.

This study found that RCM combined with dermoscopy can differentiate disease states between alopecia areata, tinea capitis, nevus sebaceous, and linear scleroderma of the scalp by identifying distinct dermal and follicular patterns.

Basal cell carcinoma shows keratin patterns similar to undifferentiated hair follicle cells.

This study observed that key signaling events controlling hair growth in ferret follicles occur between 0 and 4 days after melatonin implantation, highlighting distinct processes in follicular regeneration and fibre growth.

This study developed an in vitro model using human follicular keratinocytes to observe selective cell growth and differentiation, potentially aiding future research on hair biology and growth processes.

This study identified three symptom trajectory groups in individuals with PMDD, highlighting variations in symptom severity and duration across the luteal and follicular phases.

In this study, testosterone-induced alopecia in male rats led to significant thinning and follicular degeneration, but treatment with adipose-derived stromal vascular fraction cells markedly improved these histological changes, suggesting a potential role in hair follicle regeneration.

This study presents a case of a 6-month-old infant girl with hypotrichosis and an alopecic plaque in the occipital region, characterized by broken and dystrophic hairs with follicular papules and perifollicular hyperkeratosis, suggesting a diagnostic consideration.

This article proposes a new classification system for cutaneous adnexal cysts based on their origin in the folliculo-sebaceous unit and sweat glands, aiming to clarify their categorization and origins.

This review discusses the use of trichoscopy for diagnosing alopecia and reports no new clinical results, emphasizing its role in identifying vascular and follicular features.

This study introduces a mouse model of cyclophosphamide-induced alopecia, which effectively replicates human chemotherapy-induced hair loss and can be pharmacologically manipulated to study hair regrowth patterns.

This study found that ATM protein plays a crucial role in protecting human hair follicle melanocytes from oxidative stress, which is linked to the greying of hair.

This review compiles the anatomical, histological, and physiological characteristics of various human body follicles, highlighting potential avenues for future research, but does not report new clinical results.

This report discusses cases of frontal fibrosing alopecia developing after hair transplantation for androgenetic alopecia, without presenting new clinical findings.

This review discusses the role of intrinsic skin signals, rather than serum signals, in regulating melanin synthesis and hair pigmentation, but reports no new experimental data.

This review examines the trichoscopic characteristics of scalp DLE and LPP, correlating these findings with histopathological data, but provides no new clinical results.

This review discusses the pathophysiology, molecular events, and therapeutic options for androgenetic alopecia, but reports no new clinical findings.