In clinical practice, psoriasis is a prevalent chronic inflammatory cutaneous disease featured with the development of red plaque with silvery scales, which considerably affects cutaneous health and quality of life of those afflicted. This research aimed to examine the association between the body roundness index (BRI) and psoriasis, using data sourced from the National Health and Nutrition Examination Survey (NHANES). Our study used a cross-sectional design, including 8,479 adults, of whom 234 were diagnosed with psoriasis. Multivariable logistic regression was used to analyze the relationship between BRI and psoriasis, with stepwise adjustments for covariables. Results from multivariable logistic regression analyses indicated a significant positive relationship between BRI and the risk of developing psoriasis; specifically, after comprehensive adjustment for covariables, per 1 unit increase in BRI was linked to an 11% rise in psoriasis risk (OR = 1.11, 95% CI = 1.05–1.17). Furthermore, psoriasis patients exhibited higher average BRI compared to non-psoriasis patients and a greater prevalence of comorbidities such as hypertension and smoking. These findings suggest that higher BRI is positively correlated with the risk of psoriasis in the adult population in the US. BRI could potentially act as a practical anthropometric index for more accurately predicting the risk of developing psoriasis.

The relationship between psoriasis and site-specific cancers remains unclear. Here, we aim to investigate whether psoriasis is causally associated with site-specific cancers. We use observational and genetic data from the UK Biobank, obtaining GWAS summary data, eQTL analysis data, TCGA data, and GTEx data from public datasets. We perform PheWAS, polygenic risk score analysis, and one-sample and two-sample Mendelian randomization analyses to investigate the potential causal associations between psoriasis and cancers. In the unselected PheWAS analysis, psoriasis is associated with higher risks of 16 types of cancer. Using one-sample Mendelian randomization analyses, it is found that genetically predicted psoriasis is associated with higher risks of anal canal cancer, breast cancer, follicular non-Hodgkin’s lymphoma and nonmelanoma skin cancer in women; and lung cancer and kidney cancer in men. Our two-sample Mendelian randomization analysis indicates that psoriasis is causally associated with breast cancer and lung cancer. Gene annotation shows that psoriasis-related genes, such as ERAP1, are significantly different in lung and breast cancer tissues. Taken together, clinical attention to lung cancer and breast cancer may be warranted among patients with psoriasis.

Psoriasis, a prevalent autoimmune skin condition, considerably impairs the quality of life of those who are affected by it. Several studies have demonstrated that obesity significantly contributes to both the onset and progression of psoriasis. Relative fat mass (RFM), a novel obesity index, provides a more precise measure by incorporating both height and waist circumference (WC). The aim of this study was to investigate the association between RFM and psoriasis risk, taking into account the intermediary role played by the systemic inflammation response index (SIRI). The cross-sectional study assessed data from 8,479 adults who participated in the NHANES cycles from 2003 to 2006 and 2009 to 2014. To examine the association between RFM and psoriasis, both multivariate logistic regression model and restricted cubic spline (RCS) analyses were conducted. A mediation analysis was used to clarify the role of SIRI in the association between RFM and psoriasis. Higher RFM was significantly associated with a 5% higher risk of developing psoriasis (odds ratio [OR] = 1.05, 95% confidence interval [CI]:1.02–1.08), with RFM quartiles indicating a significant trend (P for trend < 0.05). The SIRI demonstrated a significant mediating effect on the RFM-psoriasis relationship (mediation effect ratio = 5.02%). Elevated RFM are associated with an increased prevalence of psoriasis. RFM has the potential to be a beneficial anthropometric measure for more accurately predicting psoriasis risk.

Psoriasis risk can be affected by exposure to mixtures of environmental chemicals; however, the effect of brominated flame retardants (BFRs) exposure on self-reported psoriasis has not been assessed. Herein, we evaluated the association between the exposure to BFRs compounds of 6 chemicals with risk of psoriasis. Based on data from the National Health and Nutrition Examination Survey (NHANES) 2003-2006 and 2009-2014, this analysis was conducted among 6340 adults. Multivariable logistic regression, restricted cubic splines (RCS), weighted quantile sum (WQS) regression, quantile-based g computation (Qgcomp) regression, and Bayesian kernel machine regression (BKMR) models were performed to estimate the associations. Our results indicated that co-exposure to BFRs was associated with increased risk of psoriasis. Notably, PBB153 emerged as a significant factor contributing to the risk of psoriasis, and showed a non-linear relationship between the concentration of serum PBB153 and the prevalence of psoriasis. Moreover, the association between PBB153 and psoriasis risk remained stable across all subgroup analyses, including those stratified by gender. Our study presents robust evidence connecting BFRs exposure to the prevalence of psoriasis, emphasizing the necessity for continued research and policy interventions to address this environmental health issue. Because BFRs are extensively used and detected in various environmental sources and living organisms, future investigations should further elucidate the mechanisms underlying the observed associations between BFRs exposure and psoriasis risk.

Purpose: Herpes zoster ophthalmicus (HZO) causes trouble in patients’ daily life and work. In severe cases, it may even lead to a decrease or loss of vision. To understand the demographic information and ocular symptoms of hospitalized patients with HZO, and to find potential factors related to improvement time of skin rash and duration of ocular symptoms at discharge, we design this study. Patients and Methods: This is a retrospective study. All patients diagnosed with HZO who were hospitalized in the Department of Dermatology of a hospital in Chongqing, China from January 1, 2015 to December 30, 2021 were included in this study. A total of 189 patients were included in this study. Clinical manifestations of the disease during hospitalization, improvement time of ocular skin lesions, and whether ocular skin lesions disappeared completely at discharge were recorded. Results: The most common ocular symptom was eyelid swelling (92.6%), followed by eye pain (48.7%). The most common ocular sign was conjunctivitis (78.3%), followed by keratitis (15.9%). There were 149 cases without residual ocular symptoms and 40 cases with residual ocular symptoms. There was no statistically significant difference in demographic characteristics between the two groups (P> 0.05). Age ≥ 70 years (B=0.381, − 0.061~0.022, P=0.005), use of glucocorticoids (B=0.260, 0.024~0.496, P=0.031), and use of topical antiviral drugs (B=0.380, 0.054~0.705, P=0.023) were factors affecting the time interval from admission to improvement of skin rash. Tearing (HR, OR=4.827, 1.956~11.909, P< 0.001) and blood urea nitrogen (OR=0.787, 0.620– 1.000, P=0.050) were factors influencing residual ocular symptoms. Conclusion: This study could help clinicians gain a deeper understanding of the clinical manifestations and partial influencing factors of HZO patients, which may contribute to future clinical work.