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In this study, a somatic KRAS mutation was identified in a Korean infant with nevus sebaceus and associated extracutaneous manifestations, suggesting a diagnosis of nevus sebaceus syndrome.

This case report is the first in Brazilian literature to document Becker nevus syndrome, featuring Becker's nevus, ipsilateral breast hypoplasia, and scoliosis in a 14-year-old girl.

This case report presents a patient with necrobiosis lipoidica exhibiting transepithelial elimination of cholesterol crystals through hair follicles, a finding previously associated with necrobiotic xanthogranuloma.

This case report describes a patient with untreated lepromatous leprosy developing Lucio's phenomenon, highlighting difficulties in distinguishing it from erythema nodosum leprosum with vasculonecrotic lesions.

This case report describes an atypical presentation of eruptive vellus hair cysts on the elbows, where standard diagnostic techniques were unreliable due to the loss of cystic structural integrity.

This case report describes an ossifying pilomatrixoma found in a 15-year-old girl, confirmed via histopathological examination after imaging indicated a subcutaneous mass on her cheek.

This report describes a case of trichostasis spinulosa, a condition with pruritic, black papules on the face caused by keratotic plugs with embedded vellus hairs.

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 case report describes a middle-aged man with a growing scrotal mass, diagnosed as a benign proliferating trichilemmal tumor, which can mimic squamous cell carcinoma, highlighting the importance of correct diagnosis.

The authors present a case of punctate follicular porokeratosis, suggesting it as a distinct clinical entity distinguished by keratotic lesions originating specifically from hair follicles.

In this study, the immunohistochemical and lectin binding profiles of basal cell carcinoma closely resembled those of the outer root sheath of vellus hair follicles, suggesting a potential histochemical relationship.

In this case study, a 24-year-old woman with frontal alopecia resembling frontal fibrosing alopecia was ultimately diagnosed with primary cutaneous follicle center lymphoma, highlighting the critical role of biopsy in identifying atypical alopecia presentations.

The child was diagnosed with cutaneous leishmaniasis.

This report presents a case of molluscum contagiosum virus infection within an epidermoid cyst in a 13-year-old on long-term steroid treatment, highlighting its rare occurrence and need for histological examination for accurate diagnosis.

This report describes cases of trichoblastoma and trichoepithelioma in mixed-breed dogs, highlighting their distinct microscopic characteristics without suggesting broader clinical implications.

This report documents a rare case of familial eyelash trichomegaly and synophrys in three siblings, with one sister also having loose anagen hair syndrome, an unreported association.

This case study discusses a 36-year-old female diagnosed with a facial variant of eruptive vellus hair cyst, confirmed by skin biopsy, and highlights the importance of considering this condition in the differential diagnosis of asymptomatic facial papules.

This study reports on a unique clinical presentation of folliculotropic mycosis fungoides in a 60-year-old man, highlighting complexities in diagnosis due to dense histiocytic infiltration, which led to xanthoma formation before treatment, and obscured lymphomatous features.

Senescent melanocytes in nevus skin boost hair growth.

This case report describes successful hair regrowth after removing a nevus in a patient with perinevoid alopecia and concentric regrowth, which are rare patterns of alopecia areata.

This report describes a rare case of a three-day-old male with ichthyosis hystrix type of epidermal nevus, featuring specific skin and hair symptoms but no nail or skeletal abnormalities.

This article discusses the potential involvement of hair follicle melanocytes in follicular vitiligo, noting a pattern of depigmentation centered on follicles and supported by inflammatory infiltrates, without reporting new clinical results.

This case study reports an unusual presentation of primary cutaneous diffuse large B-cell lymphoma–leg type occurring on the upper lip of an 81-year-old woman, highlighting the need for timely recognition of atypical manifestations.

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

This case report describes a proliferating trichilemmal cyst that underwent malignant transformation, with specific keratins identified in the tumor but no epidermal keratin detected.

This case report identifies a potential new syndrome characterized by trichoepitheliomas and alopecia, which may be associated with myasthenia gravis.

This case report describes a strong dermoscopic and histopathological correlation in lichen nitidus, helping differentiate it from other similar conditions.

This case report describes a 9-year-old boy with atypical alopecic and aseptic nodules of the scalp, suggesting possible inclusion within the spectrum of typical AANS and DCS due to its prepubertal onset and facial involvement.

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 study supports the idea that steatocystoma multiplex is a hamartomatous condition and suggests it may be a variant of eruptive vellus hair cyst, both originating in the pilosebaceous duct.