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In this case report, proliferative, lymphocytic, infundibular mural folliculitis and dermatitis have been documented in a female Labrador retriever in a location outside North America for the first time, detailing the dog's clinical symptoms, histopathological findings, and treatment.

This study found that intracorneal vacuoles were common in various parakeratotic skin diseases in dogs, but large vacuoles were exclusively observed in congenital follicular parakeratosis.

This review reports two new cases of porokeratotic eccrine and hair follicle nevus and analyzes all known cases in the Spanish and English literature, suggesting a link to a GJB2 gene mutation.

In this study, four dogs with a novel skin disease showed clinical lesions involving verrucous, crusted papules and plaques, and responded variably to immunosuppressive therapy, suggesting an immune-mediated cause.

This case report describes a 22-year-old male with hair casts on scalp and body hair, associated with androgenetic alopecia, also affecting his sister as pseudonits.

This notice provides information about JAMA Dermatology's website usage policy, and no research findings are reported.

It's important to tell the difference between hair casts, pseudocasts, and nits.

This report presents four new cases of follicular porokeratosis, which exhibit distinct histological features where the cornoid lamella are confined to the follicular ostia.

In this study, zinc supplementation rapidly improved conditions such as anorexia, depression, and foot soreness in sheep and goats diagnosed with zinc deficiency, along with healing skin lesions and resumption of hair and wool growth.

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.

In this case report, adult-onset porokeratotic eccrine ostial and dermal duct nevus improved with topical tazarotene treatment, as evidenced by dermatoscopic images.

This case report describes successful CO2 ablation treatment of porokeratotic adnexal ostial nevus in an 8-year-old boy, with marked improvement over a 12-year follow-up.

This study found that horizontal sections of scalp biopsies in patients with Central Centrifugal Cicatricial Alopecia often reveal follicular miniaturization, inflammation, and scarring, which can guide personalized treatment.

This article reviews zinc deficiency disorders, highlighting their clinical features and treatment with zinc therapy, but reports no new clinical results.

This case report describes a 52-year-old woman with erythema annulare centrifugum after using topical luliconazole and oral itraconazole, suggesting a drug-induced reaction confirmed by a positive rechallenge test.

An elderly man's non-healing scalp lesion was successfully treated with a strong topical steroid.

In this study of seborrhoeic dermatitis in pigmy goats, researchers found that the disease has chronic cycles of remission and relapse without clear infectious or nutritional causes, and corticosteroid treatment provided only temporary relief.

This case report describes dermoscopic features of pemphigus vulgaris on the scalp, highlighting that hair casts may suggest treatment adjustment for improved disease control.

This report suggests that peripilar hair casts, potentially linked to modern hair styling or mild trichotillomania, may be more prevalent than currently reported.

This case series suggests that Propionibacterium acnes colonization may contribute to the development of hair casts and diffuse non-scarring alopecia, as patients' symptoms improved with antibiotics targeting the bacteria.

This case report describes a 9-year-old girl with pseudonits and highlights frequent challenges in correctly diagnosing this condition.

This report describes a case of widespread Porokeratotic eccrine and hair follicle nevus in a 15-year-old woman with keratitis-ichthyosis-deafness syndrome, involving both eccrine ostia and hair follicle infundibula.

This article discusses two cases of follicular dyskeratosis (Darier-White disease), highlighting its rare occurrence, genetic basis, and the challenges in diagnosis and treatment; it presents no new experimental results.

This review discusses lichen planopilaris in children and highlights its rarity, potential for misdiagnosis, and need for suspicion in atypical or treatment-resistant alopecia cases, but reports no new results.

In this report, two adult cases of tinea capitis with unusual symptoms like pustules and non-scarring alopecia were diagnosed based on clinical and pathological findings, and successfully treated with oral Griseofulvin and topical luliconazole cream.

This study reports that generalized discoid lupus erythematosus is a recognized canine variant of cutaneous lupus erythematosus, resembling its human counterpart, with varied treatment responses and common relapses.

This report describes a rare case of porokeratotic eccrine ostial and dermal duct nevus in a 64-year-old woman, successfully treated with CO₂ laser, highlighting its potential occurrence in older adults.

This study suggests that seborrhoeic folliculitis may represent a unique form of cicatricial alopecia, linking chronic scalp dermatitis-folliculitis with low-grade inflammatory fibrosing alopecia.

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.

In this paper, regression of proliferative necrotizing otitis externa lesions in young cats was reported following systemic and topical immunomodulatory therapy.