A history of asthma is associated with susceptibility to hidradenitis suppurativa: a population-based longitudinal study.

The association of hidradenitis suppurativa (HS) and asthma remains to be investigated. To assess the bidirectional association between HS and asthma. A population-based study was conducted to compare HS patients (n = 6779) with age-, sex-, and ethnicity-matched control subjects (n = 33,259) with regard to the incidence of new onset and the prevalence of preexisting asthma.

Vitiligo and Crohn's disease form an autoimmune cluster: insights from a population-based study.

Background: While the coexistence of vitiligo and Crohn's disease (CD) has been reported in individual patients, the epidemiological association between these autoimmune conditions remains inconclusive.

Objective: To assess the bidirectional association between vitiligo and CD.

Methods: A population-based study was performed to compare vitiligo patients ( = 20,851) with age-, sex- and ethnicity-matched control subjects ( = 102,475) regarding the incidence of new-onset and the prevalence of preexisting CD.

Mortality in Patients with Bullous Pemphigoid: A Retrospective Cohort Study, Systematic Review and Meta-analysis.

There is little consensus regarding mortality data in bullous pemphigoid (BP). The aim of this study was to evaluate mortality among a relatively large cohort of Israeli patients with BP and to perform a meta-analysis synthesizing existing data on 1-year mortality rates of patients with BP. This retrospective cohort study of 287 patients diagnosed with BP between 2000 and 2015 compared the mortality of patients with BP with age- and sex-matched control subjects in the general population.

Mean Platelet Volume in Pemphigus Vulgaris.

Pemphigus vulgaris (PV) is an autoimmune blistering disease of the skin and mucous membranes. The mean platelet volume (MPV) is an index of platelet activation reported to be influenced by inflammation. We investigated the MPV in patients with PV relative to controls.