Risk Factors and Outcomes for COVID-19 in Autoimmune Inflammatory Diseases during the SARS-CoV-2 Pandemic: A Comparative Study.

Background: Patients with autoimmune disease (AID) and coronavirus disease 2019 (COVID-19) could have higher mortality due to the co-morbidity and the use of immunosuppressive therapy.

Objectives: To analyze the risk factors and outcomes of patients with AID and COVID-19 versus a control group.

Methods: A prospective cohort study included patients with and without AID and COVID-19.

Atypical Kawasaki Disease after COVID-19 Vaccination: A New Form of Adverse Event Following Immunization.

Kawasaki disease (KD) is a medium-vessel vasculitis that is typically presented during childhood; fewer than 100 cases of KD have been reported worldwide in adult patients who met the criteria according to the American College of Rheumatology. This study presents the case of an 18-year-old patient with no previous history of any disease, who presented atypical KD with liver and kidney dysfunction, with a good response to intravenous immunoglobulin therapy. The symptoms began 22 days after the application of the COVID-19 vaccine (nonreplicating viral vector Vaxzevria), and other conditions were ruled out.

Kikuchi-Fujimoto Disease: Report of a Case with Progression to Lupus Nephritis.

BACKGROUND Kikuchi-Fujimoto disease (KFD) is an enigmatic disease, with a distinctive histopathology and a benign and self-limited course. It is more frequent in young Asian women. Autoimmune diseases are identified as one of its triggers; primarily SLE, which may precede, be concomitant with, or develop after the diagnosis of KFD.

Still's disease: a rare condition, in a patient of unusual age.

IntroducciÓn: Cuando inicia en el adulto, la enfermedad de Still es de mayor prevalencia en caucásicos y entre los 16 y 35 años. De etiología desconocida, se asocia a HLA-II, DR2, 4 y 7, y Bw35. El comienzo de los síntomas es agudo, con fiebre en agujas, asociada a exantema en las extremidades y el tronco, maculopapular, eritematoso y evanescente, pruriginoso, con fenómeno de Koebner.

Plasmablastic lymphoma: case report.

IntroducciÓn: El linfoma plasmablástico es un linfoma no Hodgkin de alto grado. Se describe en pacientes con infección por el virus de la inmunodeficiencia humana (VIH), en receptores de trasplantes y en pacientes de edad avanzada. Se presenta en la cuarta década de la vida, siendo la cavidad oral el sitio más común de afección.

[Generalized chronic erythema nodosum: to consider Weber-Christian disease].

Background: Weber-Christian disease is a recurrent, non-suppurative, febrile nodular panniculitis, more frequent in young women. It is characterized by recurrent outbreaks of subcutaneous nodules, distributed symmetrically. It has an idiopathic origin, or it is secondary to pancreatic disease, physicochemical agents or alpha-1 antitrypsin deficiency.