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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.

This review discusses the characteristics and diagnostic challenges of fibrosing alopecia pattern distribution, proposing an algorithm for hair transplantation, but reports no new clinical results.

The study concluded that a 'Swiss cheese' pattern in hair follicles is a useful sign for diagnosing alopecia areata.

This discussion reviews the classification and naming of cutaneous cysts, proposing that cysts typically named cutaneous keratocyst and steatocystoma should be unified under the term "sebaceous duct cyst," but it reports no new clinical results.

This study found that certain C57BL/6 mouse substrains have a genetic vulnerability to skin lesions resembling central centrifugal cicatrical alopecia in humans, potentially worsened by high vitamin A levels.

This study found that seven cases of cicatricial alopecia initially diagnosed as discoid lupus erythematosus were more consistent with lichen planopilaris based on histopathology.

In this study, researchers observed that hidradenitis suppurativa lesions were associated with reduced collagen and elastin, and increased neovascularization in areas with chronic inflammation.

This article reviews adverse skin reactions caused by chemotherapy and cytokine treatments, describing specific and nonspecific reactions, but reports no new clinical findings.

This case study suggests that overgrowth of microorganisms with hyperkeratosis may contribute to the induction of lichen planopilaris by disrupting the immune privilege of hair follicles.

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

This review discusses central centrifugal cicatricial alopecia, its similarities to lichen planopilaris, and emphasizes the need for further research due to its underdiagnosis and impact on African-descended women.

In this study, testosterone and certain metabolites were highly effective in promoting sebaceous structure growth in the female hamster flank organ, while others had limited or no effect.

This report discusses two cases of porokeratotic eccrine ostial and dermal duct nevus and porokeratotic eccrine and hair follicle nevus, suggesting they may represent a single clinical entity, but reports no therapeutic outcomes.

Early diagnosis and treatment can help manage fibrosing alopecia in older women.

This report describes a unique benign neoplasm on the nail unit called onychoblastoma, which histologically resembles a trichoblastoma, marking the first documented case of this tumor type.

This study examines the structure of the "sinuskissen" in cat hair follicles, revealing it as a loose connective tissue susceptible to changes in aqueous flow, and describes its variable three-dimensional shapes.

This case report details the development of a psoriasiform rash and inflammatory alopecia in a 29-year-old man with severe atopic dermatitis following dupilumab treatment. The authors observed hair regrowth and eczema control after discontinuing dupilumab and beginning treatment with abrocitinib.

This case report documented a novel presentation of a canine viral plaque appearing as a solitary exophytic keratin-filled mass, highlighting the need to differentiate it from a hair follicle tumor.

In this study, dermoscopy was suggested as a potentially useful tool for improving the clinical recognition of pilomatricoma.

The document explains various skin conditions and their treatments.

This review discusses the histopathological diagnosis of scarring and non-scarring alopecias, emphasizing the importance of adequate tissue sampling and clinical information; it reports no new empirical results.

This case report describes an inflammatory skin reaction linked to kava kava ingestion, with the patient's condition resolving after treatment with oral prednisone and topical hydrocortisone.

Examining scalp tissue under a microscope helps diagnose and understand hair loss diseases.

Acquired perforating dermatosis often affects skin in people with kidney issues and diabetes.

This case report identified a new isotype of male androgenetic alopecia (inverse-MAGA) in a man successfully treated with finasteride and minoxidil, suggesting the need for future studies to evaluate this variant widely.

This study found that overexpressing Dsg3 in the suprabasal epidermis of transgenic mice resulted in flaking skin and abnormal hair growth, supporting Dsg3's role in regulating epidermal differentiation.

This study observed that cutaneous lymphocytosis in cats is a slowly progressive and relatively benign disease, but predicting individual clinical outcomes from skin lesions was not possible.

This case report describes a 19-year-old woman with typical clinical and histopathological findings of trichofolliculoma, a rare hair follicle hamartoma usually located on the face or scalp.

This case report describes a unique presentation of porokeratotic eccrine ostial and dermal duct nevus with lesions on the dorsum of the hand and a focal lichenoid infiltrate, differing from typical palm and sole involvement.

This case report highlights the diagnostic challenges of distinguishing folliculotropic mycosis fungoides from alopecia areata and lichen planopilaris, emphasizing the importance of histopathological evaluation for accurate diagnosis and treatment.