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This article reviews acne keloidalis in young black men, describes its clinical and histopathological characteristics, and highlights surgical therapy approaches despite the uncertain etiology of the condition.

This review discusses histologic findings in alopecia and emphasizes the importance of understanding normal follicular anatomy and cycles in transverse sections, without reporting new results.

This article reviews insights into the pathogenesis of primary cicatricial alopecias, such as lichen planopilaris, provided by emerging technologies, but it does not report new clinical results.

This review discusses evidence-based guidance for managing primary cicatricial alopecias but reports no new clinical results, highlighting significant gaps in knowledge and the need for more quality trials.

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

This article reviews various types of primary cicatricial alopecias and emphasizes the importance of accurate diagnosis to improve management strategies, particularly detailing remaining lymphocytic forms and expanding on neutrophilic and mixed types.

This review discusses current hair removal strategies in paramedian forehead flap reconstruction and reports no new clinical results; it offers recommendations to improve aesthetic outcomes by guiding timing and technique selection.

This review discusses the link between insulin resistance and skin conditions such as acanthosis nigricans and psoriasis, but provides no new clinical results.

Hidradenitis Suppurativa is a chronic skin condition best treated early with surgery for better outcomes and less recurrence.

This study found that excision with primary closure is an effective surgical treatment for extensive acne keloidalis nuchae, with good cosmetic results and minimal recurrence observed among patients.

This review discusses the potential efficacy and applications of platelet-rich plasma in dermatology, highlighting its use in various skin conditions but reporting no new clinical results; the authors call for standardization of preparation and treatment methods.

This study concluded that ACD-A vials yielded the highest quality and quantity of platelets in platelet-rich plasma for hair rejuvenation compared to EDTA and sodium citrate.

This article reviews the challenges in treating hidradenitis suppurativa and discusses potential treatment options, emphasizing the need for increased awareness and comprehensive care, but reports no new clinical results.

This study found that apoptosis was more prevalent in hair follicles of women with female pattern hair loss, particularly in miniaturized follicles, and was associated with follicular inflammation.

Follicular dystrophy in immunocompromised patients may be linked to medication or viral factors and can improve with treatment changes.

In this study, electron microscopy of follicular mucinosis showed severe cytoplasmic degeneration in hair follicles, with myelin figures and onion-like lamellar structures, but no indications of mucin release through degeneration or degradation were found.

This review details pathologic changes in hair follicles, such as infundibular hyperkeratosis and inflammation, but offers no new diagnostic results.

In this study of folliculitis decalvans, researchers found that compound follicular structures in scalp biopsies are primarily composed of terminal anagen follicles, surrounded by fibrosis and inflammatory cell infiltrate, which could enhance understanding of this condition.

This article explores the complexity and significance of the hair follicle, emphasizing new insights into its biological roles and the involvement of p53 in follicular regression.

This study found that as hair loss severity increased in women with female pattern hair loss, the number of vellus follicles also rose, indicating miniaturization of terminal hair follicles.

This study found that disrupting Smad4 signaling in young mice led to overactivation of follicle stem cells, causing hyperplasia and depletion of the stem cell niche.

This study in live mice suggests that hair follicle regression involves apoptosis propagation towards stem cells, potentially slowed by a protective signal from the stem cells themselves.

This study suggests that label-retaining cells in the hair follicle contribute to follicular renewal, indicating a specific role in the hair cycle by proliferating during the late telogen phase.

This case report describes a 59-year-old woman diagnosed with frontal fibrosing alopecia, presenting with scarring alopecia and perifollicular erythematous papules.

This study suggests that different melanocyte subpopulations in hair follicles have varying patterns of apoptosis and survival during the catagen phase, which may inform models for modulating melanocyte behavior in vivo.

In this study using live mice, researchers observed that during hair follicle regression, apoptosis in basal cells may propagate by triggering neighboring cells, potentially regulated by a gradient of pro-survival signals from stem cells, and proposed a testable mechanism to further explore this process.

This study found that fibrosis-associated trochanters in central centrifugal cicatricial alopecia are enriched with hair follicle stem cells and may indicate a disrupted stem cell niche contributing to scarring.

This study found that topical trypsin application after hair removal in mice led to cell death at the follicular papilla, which delayed hair growth and pigmentation.

This study found that dermal papillae in alopecia areata, including clinically normal follicles, exhibited ultrastructural abnormalities that suggest an early pathological role in the disease's development.