The growing demand for natural treatments has raised concerns among clinicians due to limited scientific evidence supporting their use. This review article addresses the issue by assisting dermatologists and general practitioners in recommending natural treatments for the following common nail disorders: nail brittleness, onychomycosis, periungual verrucae, paronychia, chloronychia, nail psoriasis, nail lichen planus, onychocryptosis, onycholysis, and congenital malalignment of the great toenail. One limitation is the scarcity of existing reviews on natural treatment options for nail disorders in the literature. Through a comprehensive review of existing literature, this article consolidates the available evidence on natural treatment options for these conditions. Although some natural treatments for nail disorders are supported by scientific evidence, the indiscriminate use of such remedies may lead to severe poisoning and health problems. Given the widespread and increasing use of natural treatments, clinicians play a pivotal role in educating patients about evidence-based remedies and debunking misleading claims. By doing so, clinicians can enhance patient safety and improve treatment outcomes. It is essential for healthcare professionals to be well-informed and equipped with the knowledge to differentiate between effective natural treatments and unverified claims, ensuring that patients receive appropriate care.

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Lichen planus is a chronic inflammatory disorder affecting skin and mucosal surfaces. There are multiple variants of lichen planus described in the literature. We report a case of inverse lichen planus in a healthy 50-year-old male who presented to our dermatology clinic with multiple violaceous to hyperpigmented patches affecting both axillae and groin for three months. A skin biopsy confirmed the diagnosis of lichen planus. The patient subsequently developed nail dystrophy affecting his fingernails consistent with nail lichen planus. Early recognition and treatment of nail lichen planus is important to prevent irreversible scarring.

Nail lichen planus (NLP) is a chronic inflammatory disease of unknown etiology and has been recognized as a nail potentially critical disorder, which can be severe and rapidly worsen with irreversible scarring. Currently, the treatment options are limited based on disease progression. High-potency topical or intralesional corticosteroids are commonly considered first-line therapeutic options; however, these therapies are unsuitable for all patients with NLP, especially those with extensive lesions. As a potential therapeutic target for inflammatory skin diseases, Janus kinase (JAK) inhibitors can suppress both type-1 and type-2 cytokines, thereby reducing the immune response and resultant inflammation. Recent studies have suggested benefit in cutaneous lichen planus and lichen planopilaris with oral JAK inhibitors. Here, we report a case of severe NLP that exhibited a favorable response to tofacitinib treatment. A 41-year-old woman presented to our clinic with a 2-year history of nail dystrophy of all fingers of both hands. The NLP was finally confirmed by histopathology and the above clinical features. After the informed consent signature, tofacitinib monotherapy, 5 mg twice a day, was then begun, and after 6 months, the appearance of her nails had a significant improvement.

UNASSIGNED: Recent expert recommendations suggest mycophenolate mofetil (MMF) as a third-line therapy, in severe corticosteroid-dependent or corticosteroid-resistant nail lichen planus (NLP). However, there is currently no literature to support MMF use in this indication. This is a retrospective monocentric French case series of 5 patients with severe corticodependant or corticoresistant NLP treated by oral MMF (2-3 g/day), between 2013 and 2021.
UNASSIGNED: The primary outcome was therapeutic success in a target fingernail. All 5 patients showed some clinical improvement, ranging from mild improvement (1/5) to clinical cure (2/5). Clinical improvement was more significant when the drug was taken for a longer period (24 months vs. 4 months) and at a higher dose (3 g/day vs. 2 g/day). Relapse occurred after stopping or tapering the MMF dose. MMF was well tolerated.
UNASSIGNED: MMF may be a treatment to consider for severe corticosteroid-dependent or corticosteroid-resistant NLP. The long-term safety of this treatment warrants further investigation.

UNASSIGNED: Frontal fibrosing alopecia (FFA) is characterized by irreversible, symmetrical band-like hair loss in the frontotemporal region. Lichen planus pigmentosus (LPP) is a variant of lichen planus (LP) that presents with hyperpigmented macules and patches predominantly in sun-exposed areas. Nail LP is a subtype of LP that can be present alone or with other forms of LP.
UNASSIGNED: We report a rare case of a 59-year-old woman presenting with symmetrical, gray-brown, hyperpigmented lesions on her neck and face, band-like alopecia in the frontotemporal region, severe onycholysis in two fingernails, and prominent longitudinal ridging in all fingernails. Clinical, dermoscopic, and histological findings established a diagnosis of FFA associated with LPP and nail LP was established.
UNASSIGNED: In recent years, it has been established that FFA can be associated with LPP and it is thought to be a variant of lichen planopilaris. Nail involvement is rarely reported in FFA or LPP. To our knowledge, the presence of the three conditions in the same patient has not been previously reported. Although rare we would like to emphasize the importance of a careful examination of the nails in patients with FFA and/or LPP to prevent irreversible nail changes.

Lichen planus is chronic inflammatory mucocutaneous disease. Involvement of nails (nail lichen planus: NLP) could be the only manifestation or it could be associated with the other typical skin and mucous localizations. Typical NLP alterations are linear nail bed dyschromia, longitudinal ridging, splitting, onycholysis, and subungual hyperkeratosis. Pterygium could be observed in advanced stages. Treatment of NLP is challenging. Limited clinical data have suggested that both oral and topical retinoids could be beneficial. Recently, a nail lacquer containing urea (20%), keratinase from Bacillus licheniformis, and hydroxipinacolone retinoate (U-KR lacquer) has been available. This product has shown good efficacy in the treatment of onychodystrophy characterized by onychogryphosis. We have evaluated, in a case series pilot study, the efficacy of this lacquer in subjects with moderate NLP. The product was applied once daily on the affected nails. Ten subjects (6 men and 4 women, mean age 38 years) after their written informed consent, with clinical NLP (2 subjects with histological confirmation) affecting foot or hand nails (mean number of nails involved: 4; range from 1 to 10), were treated for 12 consecutive weeks with U-KR, one application per day. The main endpoint was the evolution of a NLP severity score (NLPSS) evaluating 7 nail signs: grade of onycholysis, longitudinal ridging, splitting, grade of subungual hyperkeratosis, nail bed thickening, dyschromia, and nail pitting. For each item, a 4-grade score (from 0: no sign to 3: severe) was used (range of NLPSS from 0 to 21). At baseline, the NLPSS was 20.8 ± 3. After 12 weeks, the NLPSS showed a significant reduction to 4 ± 8.8, representing an 81% reduction in comparison with baseline value (p = 0.0001), with an absolute difference between means of -16.86 ± 2,586 (95% CI of the difference: from -22.49 to -11.22) The product was very well tolerated. This 10-case pilot study suggests that a nail lacquer with 3 components (urea, keratinase, and a retinoid molecule) could be useful in subjects with NLP. Future controlled trials are warranted to better define the therapeutic potential of this product in NLP treatment.

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Nail lichen planus is an inflammatory disorder of the nails with potential for significant cosmetic disfigurement and functional impairment. Nail manifestations may be isolated or appear concurrently with other forms of lichen planus. Longitudinal ridging is the most common clinical finding, but progressive disease may result in irreversible scarring (dorsal pterygium) or permanent nail loss (anonychia). Data on treatment are limited to retrospective studies and case reports. The mainstays of treatment are intralesional and intramuscular corticosteroid injections and oral retinoids. There is a need for randomized controlled trials on nail lichen planus to more rigorously assess efficacy and outcomes.