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This case report describes a 30-year-old Brazilian male who developed vitiligo lesions following diphencyprone therapy for alopecia areata.

This study observed that melanocytes in the outer root sheath of fetal scalp hair follicles may act as stem cells, showing rapid proliferation but immature function and morphology in culture.

This report describes a rare case of pseudopelade of Brocq in a 20-year-old male, emphasizing its unique presentation with scalp hair loss and mild itching.

This case report highlights an atypical presentation of vitamin B12 deficiency in a 28-year-old man with reversible symptoms including localized hand hyperpigmentation and megaloblastic anemia, resolved after B12 supplementation.

In this study, researchers concluded that Langerhans' cells are likely uninvolved in depigmentation during vitiligo in C57Bl/Ler-vit vit mice, as their numbers were normal during depigmentation and increased afterward.

This report describes a rare case of lipedematous alopecia in a young Caucasian man, a condition primarily seen in African-American females, presenting with specific scalp and histological characteristics.

This study found that hyperpigmentation following contact immunotherapy for severe alopecia areata may indicate poor treatment responsiveness and aligns with characteristics of pigmented contact dermatitis.

Early diagnosis of pseudopelade of Brocq in men is crucial to prevent permanent hair loss.

In this report, two cases of melanocytic matricoma, a rare benign hair follicle lesion that mimics melanoma and basal cell carcinoma, were described and successfully treated with complete surgical excision. Histological analysis was crucial for differentiation from similar malignant lesions.

This case study describes a patient with secondary syphilis, including alopecia syphilitica diffusa, whose symptoms resolved completely after treatment with benzylpenicillin following prednisolone prophylaxis.

This study found that histopathologic features such as a catagen/telogen shift, melanin in fibrous tracts, and small dystrophic follicles can help differentiate alopecia areata from pattern hair loss in the absence of peribulbar infiltrates.

In this study, silencing P-cadherin in human scalp hair follicles reduced melanogenesis and associated protein expression, suggesting P-cadherin is crucial for normal hair pigmentation via GSK3β-mediated Wnt signaling.

This case report describes koebnerization-induced vitiligo in a woman following repeated eyebrow microblading, suggesting a link between the procedure and the phenomenon in susceptible individuals.

This case report presents a rare manifestation of secondary cutaneous B-cell lymphoma as erythematous macules coalescing into reticular patches on the scalp and forehead.

This case highlights the importance of considering syphilis testing for patients with unusual symptoms like hair loss and hypopigmentation, emphasizing the diagnostic and management challenges in resource-limited settings.

This article presents a clinicopathologic challenge involving early leonine facies with alopecia in a young man and reports no new clinical results.

This case report describes a giant pigmented tumor of the scalp in a 47-year-old woman and suggests a possible dual origin involving neural crest differentiation.

This case report details atrichia with papular lesions in a 4-year-old girl, highlighting specific histological findings on her scalp and other affected areas.

This report describes a case in which intramuscular cyanocobalamin treatment reversed skin and nail pigmentation changes and premature gray hair caused by vitamin B12 deficiency due to pernicious anemia.

This case report details a 12-year-old boy from rural south India diagnosed with syringolymphoid hyperplasia, which presented with alopecia and anhidrosis.

This study found that adnexal acantholysis does not reliably distinguish pemphigus vulgaris from pemphigus foliaceus, but the level of acantholysis and degree of dyskeratosis serve as distinguishing features among acantholytic disorders.

This review explores the trichoscopic features of dark scalp, particularly the brown honeycomb pigment network, and its variations in different types of alopecia, but it presents no new clinical findings.

This case study highlights congenital atrichia with papular lesions as a cause of total body hair loss, characterized by the absence of hair follicles and the presence of skin-colored papules.

This study observed that pigmented casts are present in various alopecia types but are not specific to any single diagnosis, with distinct morphological features noted in trichotillomania.

This study is the first to describe a mixed pattern of essential syphilitic alopecia using trichoscopy, identifying features like tapered bended hairs and perifollicular hyperkeratosis in a patient without secondary syphilis symptoms.

In this study, hair color changes in piebald rats after skin grafting suggest that such changes are more likely due to the surgical process than the new environment.

This case report highlights the importance of suspecting underlying malignancy, such as Hodgkin's lymphoma, in patients with diffuse hair loss and other cutaneous symptoms.

The man's hair loss and skin papules were diagnosed as atrichia with papular lesions, not alopecia areata universalis.

This study highlights a case where progressive baldness initially diagnosed as alopecia universalis was attributed to a basal cell hamartoma of each hair follicle, stressing the importance of skin biopsies for unusual alopecia cases.