An emerging epidemic of allergic contact dermatitis due to phytonadione epoxide (oxidised vitamin K1).

Background: Reports of allergic contact dermatitis (ACD) to phytonadione epoxide (PE) in cosmetics suggest that PE is as powerful a sensitiser as its parent compound phytonadione.

Objective: To evaluate a case series of ACD to PE in Spain.

Methods: We reviewed the records of 20 patients with ACD to cosmetics containing PE diagnosed across Spain between January 2019 and June 2023.

Dupilumab treatment in paediatric atopic dermatitis (2-18 years): Spanish multicentre retrospective real-world study.

Background: Moderate-to-severe atopic dermatitis (AD) can be difficult to manage in paediatric patients, and there are few licensed treatments available for this age group. Dupilumab is approved for the treatment of AD in children older than 6 months.

Objectives: To assess the effectiveness and safety of dupilumab in a real-world cohort of paediatric patients with AD in Spain.

Assessment of potential predictive factors of dupilumab response in patients with moderate-to-severe atopic dermatitis.

Background: Dupilumab has shown to be an effective and safe treatment for patients with moderate-to-severe atopic dermatitis (AD).

Objective: To evaluate the predictive factors of response (PRF) in patients with moderate-to-severe AD treated with dupilumab.

Methods: Observational, retrospective and multicentre study conducted on adult patients diagnosed with moderate-to-severe AD treated with dupilumab, with a post-treatment follow-up of at least 16 weeks.

Atopic Dermatitis: Fertility, Pregnancy, and Treatment Perspectives.

Hormonal and immunologic changes during pregnancy can contribute to the development of different dermatoses, the most common of which is atopic eruption of pregnancy (AEP). Of atopic dermatitis (AD) cases during pregnancy, 80% are new-onset presentations, while 20% represent recurrences or exacerbations of preexisting disease. Evidence on the effects of previous AD on fertility is limited.

Single-cell multi-omics analysis of COVID-19 patients with pre-existing autoimmune diseases shows aberrant immune responses to infection.

In COVID-19, hyperinflammatory and dysregulated immune responses contribute to severity. Patients with pre-existing autoimmune conditions can therefore be at increased risk of severe COVID-19 and/or associated sequelae, yet SARS-CoV-2 infection in this group has been little studied. Here, we performed single-cell analysis of peripheral blood mononuclear cells from patients with three major autoimmune diseases (rheumatoid arthritis, psoriasis, or multiple sclerosis) during SARS-CoV-2 infection.

Predictive factors for anti-MDA5 antibody in patients with dermatomyositis: a retrospective multicenter study.

Background And Objectives: Melanoma differentiation-associated gene 5 antibody (anti-MDA5) in dermatomyositis (DM) is associated with rapidly progressive interstitial lung disease and poor prognosis. Early diagnosis is key to improving the prognosis of these patients. The aim was to confirm cutaneous characteristics in patients with anti-MDA5 dermatomyositis and to explore new diagnostic markers for the presence of anti-MDA5 (anti-MDA5 ).

Treatment of severe atopic dermatitis with tralokinumab in clinical practice: short-term effectiveness and safety results.

Background: Tralokinumab was recently approved for the treatment of moderate-to-severe atopic dermatitis (AD) and is the first selective interleukin (IL)-13 inhibitor that specifically neutralizes IL-13 with high affinity.

Objectives: To determine the real-life short-term effectiveness and safety of tralokinumab treatment in patients with moderate-to-severe AD.

Methods: A multicentre retrospective study was conducted including adult patients with moderate-to-severe AD who started tralokinumab treatment from 1 April to 30 June 2022 in 16 Spanish hospitals.

The risk of hepatic adverse events of systemic medications for psoriasis: a prospective cohort study using the BIOBADADERM registry.

Background: Limited information is available regarding the risk of incident liver disease in patients with psoriasis receiving systemic therapies.

Objectives: To describe the liver safety findings of conventional and modern systemic therapies for moderate-to-severe psoriasis, and to compare the relative incidence rates of hepatic adverse events (AEs) for each drug.

Methods: All the patients on the BIOBADADERM registry were included.

Manifestations, clinical course and prognostic markers in cutaneous polyarteritis nodosa.

Background And Objectives: Cutaneous polyarteritis nodosa (CPAN) is a comparatively rare form of vasculitis that affects small arteries and arterioles in the panniculus and dermo-subcutaneous junction. Limited information is available regarding its course in the European population. The aim of this study is to characterize the manifestations and prognostic markers of recurrence in CPAN.

Nivolumab-Induced Bullous Pemphigoid Managed without Drug Withdrawal.

The widespread use of anti-programmed cell death receptor-1 (PD-1) agents has shed light to unusual immune-related adverse effects, especially affecting the skin. We report a case of bullous pemphigoid secondary to nivolumab therapy for metastatic renal carcinoma with a previously unreported complete response to clobetasol ointment alone. The autoimmune blistering disease was successfully treated without oral corticosteroids, and the anti-PD-1 agent could be maintained without recurrence of the skin lesions.