Retrospective analysis of the clinical characteristics and patient-reported outcomes in vulval lichen planus: Results from a single-center study

Lichen Planus: What is New in Diagnosis and Treatment?

Lichen planus (LP), an idiopathic, multifaceted chronic inflammatory disease with a heterogeneous clinical presentation, affects approximately 0.5-1% of the population. The various clinical manifestations of LP fall into three broad categories, namely cutaneous, appendageal, and mucosal, with further subclassification depending on the morphology and distribution patterns of individual lesions. There is mounting evidence that LP has systemic associations, including autoimmune conditions, glucose intolerance, dyslipidemia, and cardiovascular disorders. Cutaneous hypertrophic and mucosal forms of LP are at a heightened risk for malignant transformation. Familiarity with these potential associations in conjunction with long-term follow-up and regular screening could lead to a timely diagnosis and management of concomitant conditions. In addition, the frequent quality of life (QoL) impairment in LP underscores the need for a comprehensive approach including psychological evaluation and support. Several treatment strategies have been attempted, though most of them have not been adopted in clinical practice because of suboptimal benefit-to-risk ratios or lack of evidence. More recent studies toward pathogenesis-driven treatments have identified Janus kinase inhibitors such as tofacitinib, phosphodiesterase-4 inhibitors such as apremilast, and biologics targeting the interleukin-23/interleukin-17 pathway as novel therapeutic options, resulting in a dramatic change of the treatment landscape of LP. This contemporary review focuses on the diagnosis and management of LP, and places emphasis on more recently described targeted treatment options.

Ayurvedic management of a refractory skin disease clinically diagnosed as Cutaneous Lichen Planus-A case report

This study reports the successful management of a recurrent, refractory skin disease diagnosed clinically as Cutaneous Lichen Planus (CLP) in a female patient with Ayurvedic treatment. A 42-year-old home maker from Coimbatore presented with blackish-red pigmented skin rashes and white streaks. Though mucous membranes were not affected, she did not respond to homoeopathic and biomedical treatment. The lesions were spread all over the body except for the face, scalp, axillary and genital region. In addition, she complained of dry skin, pain, and itching. The condition was treated as Kapha-Pitta dominant Tridoshaja Kushta based on Ayurvedic clinical assessment. The patient recovered after one year of conservative Ayurvedic intervention. After six years, there was a relapse, and the patient was admitted for a full course of Ayurvedic treatment and recovered within six months. Ayurvedic interventions should be considered an option in refractory skin diseases like Cutaneous Lichen Planus.

Bidirectional Association between Lichen Planus and Hepatitis C-An Update Systematic Review and Meta-Analysis

Lichen planus (LP) is a chronic, inflammatory mucocutaneous disorder associated with systemic diseases such as hepatitis C (HCV). The objective of this study is to evaluate the association between LP and HCV bidirectionally through a systematic review and meta-analysis. A comprehensive search of studies published was performed in the databases of PubMed, Embase, and Web of Science. Out of 18,491 articles, 192 studies were included. The global prevalence of HCV positive (HCV+) in LP patients registered from 143 studies was 9.42% [95% confidence interval (CI), 7.27-11.58%], and from these, 84 studies showed HCV+ 4-fold more frequent in LP than a control group (OR, 4.48; 95% CI, 3.48-5.77). The global prevalence of LP in patients HCV+ recorded from 49 studies was 7.05% (95% CI, 4.85-9.26%), and from these, 15 registered a 3-fold more LP in HCV (OR, 3.65; 95% CI, 2.14-6.24). HCV+ in LP patients showed great geographic variability (OR, 2.7 to 8.57), and the predominantly cutaneous location was higher (OR, 5.95) than the oral location (OR, 3.49). LP in HCV+ patients was more frequent in the Eastern Mediterranean (OR, 5.51; 95% CI, 1.40-15.57). There is a higher prevalence of HCV+ in LP and vice versa than in the control group, especially in certain geographical areas that should be taken into consideration when doing screening in countries with an upper prevalence of HCV among the general population.

Comparing quality of life in women with vulvovaginal lichen planus treated with topical and systemic treatments using the vulvar quality of life index

BACKGROUND/OBJECTIVES

For patients with vulvovaginal lichen planus (VLP), there exists limited data on the comparison between patient quality of life treated with topical and/or systemic treatments. We characterised the treatment outcomes of VLP using the vulvar quality of life index (VQLI) comparing women treated with systemic immunosuppression, including humanised interleukin-23 monoclonal antibody tildrakizumab, to those treated with topical corticosteroids alone.

METHODS

A retrospective cohort study is reported from a dermatology practice in Sydney, Australia. Electronic medical records for adult women with a diagnosis of VLP were reviewed identifying 112 subjects. VQLI scores in four domains (symptoms, activities of daily living, anxiety and sexual function) were compared between women able to maintain remission of disease with topical monotherapy to those with recalcitrant disease requiring treatment with conventional systemic immunosuppressants and for those not responding to this treatment, tildrakizumab.

RESULTS

At baseline women requiring tildrakizumab treatment had the highest total VQLI score (24.6), whilst women whose disease was maintained on topical treatment had the lowest (19.2). Women treated whilst on tildrakizumab had significant reduced total mean VQLI scores (13.32, 95% CI 8.61-18.01) than when treated with other Systemic (22.00, 95% CI 16.52-27.53; p < 0.001) or topical (21.71, 95% CI 16.13-26.32; p < 0.01). Women treated with tildrakizumab demonstrated statistically significant decreases in mean VQLI scores in all four domains of the VQLI compared to previous scores when on other systemic treatments.

CONCLUSION

We report the largest cohort study to date of adult women with VLP evaluating treatment responses to topical and systemic agents using the VQLI. In women whose VLP did not improve with conventional systemic immunosuppressants, tildrakizumab resulted in statistically significant decrease in mean VQLI scores in all 4 domains, highlighting tildrakizumab as an alternative treatment for VLP.

Vulvovaginal erosive lichen planus refractory to topical therapies: What's next? A case report

A 60-year-old woman was referred for progressive and severe vulvovaginal pain characterized by erosions and Wickham's stria for the past 7 months. Her condition had not responded to oral fluconazole, topical estrogen cream, and topical clobetasol cream. Vulvar and vaginal biopsies were obtained under general anesthesia to verify the diagnosis of erosive lichen planus given the failed response to ultrapotent topical steroids. Tacrolimus cream was added but not tolerated. Oral and cutaneous lesions of lichen planus also developed. In the absence of evidence-based guidelines, three different systemic treatments were administered sequentially (hydroxychloroquine, mycophenolate, and finally cyclosporin) before a satisfactory, well-tolerated, and sustained clinical response was obtained. Topical betamethasone ointment in a taper was continued to assist in sustaining a vulvovaginal response after cyclosporin was discontinued.

Unmet Medical Needs in Chronic, Non-communicable Inflammatory Skin Diseases

An estimated 20-25% of the population is affected by chronic, non-communicable inflammatory skin diseases. Chronic skin inflammation has many causes. Among the most frequent chronic inflammatory skin diseases are atopic dermatitis, psoriasis, urticaria, lichen planus, and hidradenitis suppurativa, driven by a complex interplay of genetics and environmental factors. Autoimmunity is another important cause of chronic skin inflammation. The autoimmune response may be mainly T cell driven, such as in alopecia areata or vitiligo, or B cell driven in chronic spontaneous urticaria, pemphigus and pemphigoid diseases. Rare causes of chronic skin inflammation are autoinflammatory diseases, or rheumatic diseases, such as cutaneous lupus erythematosus or dermatomyositis. Whilst we have seen a significant improvement in diagnosis and treatment, several challenges remain. Especially for rarer causes of chronic skin inflammation, early diagnosis is often missed because of low awareness and lack of diagnostics. Systemic immunosuppression is the treatment of choice for almost all of these diseases. Adverse events due to immunosuppression, insufficient therapeutic responses and relapses remain a challenge. For atopic dermatitis and psoriasis, a broad spectrum of innovative treatments has been developed. However, treatment responses cannot be predicted so far. Hence, development of (bio)markers allowing selection of specific medications for individual patients is needed. Given the encouraging developments during the past years, we envision that many of these challenges in the diagnosis and treatment of chronic inflammatory skin diseases will be thoroughly addressed in the future.

Lichen Planus

Lichen planus (LP) is a T cell-mediated disease affecting the stratified squamous epithelia of the skin and/or mucus membrane. Histologically, the disease is characterized by a lichenoid inflammatory infiltrate and vacuolar degeneration of the basal layer of the epidermis. LP has three major subtypes: Cutaneous, mucosal and appendageal LP. Rarely, it may affect the nails in the absence of skin and/or mucosal changes. LP may also be induced by several drugs, typically anti-hypertensive medication or be associated with infections, particularly viral hepatitis. The diagnosis is based on the clinical presentation and characteristic histological findings. Although the disease is often self-limiting, the intractable pruritus and painful mucosal erosions result in significant morbidity. The current first-line treatment are topical and/or systemic corticosteroids. In addition, immunosuppressants may be used as corticosteroid-sparing agents. These, however are often not sufficient to control disease. Janus kinase inhibitors and biologics (anti-IL-12/23, anti-IL17) have emerged as novel future treatment options. Thus, one may expect a dramatic change of the treatment landscape of LP in the near future.