Abstract Introduction Chronic back pain (CBP) is a major cause of years lived with disability. Social inequalities increase the prevalence and burden of CBP. Management of CBP was affected by restricted access to non-pharmacological treatments and outdoor activities during COVID-19 pandemic. Objectives To determine the prevalence of CBP among patients with COVID-19 as well as the impact of having CBP in COVID-19 outcome in our low-income population. Methods Retrospective cohort of individuals with confirmed COVID diagnosis from May 2020 - March 2021, at Hospital Regional UNIMED (HRU) in Fortaleza, Ceará, Brazil. Data included comorbidities and household income. Results Among 1,487 patients, 600 (40.3%) were classified as having CBP. Mean age as well as income were similar in CBP and non-CBP groups, with more women in the CBP group. Hypertension and asthma, but not diabetes, were more prevalent in those with CBP. Need for emergency care, hospitalization, and admission to intensive care unit were similar regardless of having CBP. Dyspnea was more common in CBP vs. non-CBP groups, with 48.8% vs. 39.4% percentages, respectively (p = 0.0004). Conclusion Having CBP prior to COVID did not impact the acute clinical outcome of COVID individuals of a low- income population. (CBP disability nonpharmacological non pharmacological COVID19 19 COVID-1 pandemic lowincome low population 202 2021 HRU (HRU Fortaleza Ceará Brazil 1487 1 487 1,48 60 40.3% 403 40 3 (40.3% nonCBP groups group asthma diabetes hospitalization vs 488 48 8 48.8 394 39 4 39.4 percentages p 0.0004. 00004 0.0004 . 0 0004 0.0004) COVID1 COVID- 20 148 1,4 6 40.3 (40.3 48. 39. 0000 0.000 000 2 14 1, 40. (40. 0.00 00 (40 0.0 (4 0. (

ABSTRACT Chikungunya fever (CHIK) is a neglected tropical disease associated with chronic arthritis. CHIK is usually a self-limiting condition; however, extra-articular manifestations present as atypical illness in a minority of patients. These atypical features may mimic other conditions and potentially distract physicians from the true diagnosis. This review analyzes the evidence of many unusual extra-articular manifestations reported in cases of CHIK. Depending on the affected system, these unusual manifestations include encephalitis, myocarditis, acute interstitial nephritis, cutaneous manifestations, acute anterior uveitis, abdominal pain, and depression. In addition, coinfections and comorbidities may cause atypical illness and obscure the diagnosis. Further studies are required to clarify the pathophysiology and natural history of CHIK, as it remains a burdening condition. Exploring its atypical symptoms may be the missing scientific piece of this puzzle. (CHIK arthritis selflimiting self limiting condition however extraarticular extra articular patients diagnosis system encephalitis myocarditis nephritis uveitis pain depression addition puzzle

Abstract In this paper, we sought to determine the prevalence of arthritis mutilans in a single cohort of Brazilian psoriatic arthritis patients followed at a tertiary university reference center. Our study demonstrated a high prevalence of arthritis mutilans associated to comorbidities and biologic therapy. In addition, our data suggest that axial involvement may be an intriguing aspect of psoriatic arthritis mutilans and that rheumatologists should be aware of axial disease, even if the phenotype is marked by peripheral joint severity.

O lítio é amplamente empregado na terapia do transtorno bipolar. Sua toxicidade renal inclui distúrbio na capacidade de concentração urinária e natriurese, acidose tubular renal, nefrite túbulo-intersticial evoluindo para doença renal crônica e hipercalcemia. O efeito adverso mais comum é o diabetes insipidus nefrogênico, que acomete de 20%-40% dos pacientes semanas após o início do tratamento. A nefropatia crônica correlaciona-se com a duração do uso de lítio. A detecção precoce de disfunção renal deve ser feita através de monitoração rigorosa dos pacientes e colaboração entre o psiquiatra e o nefrologista. Recentes trabalhos experimentais e clínicos começam a esclarecer os mecanismos pelos quais o lítio induz alteração da função renal. No presente trabalho, objetivamos revisar a patogênese, a apresentação clínica, os aspectos histopatológicos e o tratamento da nefrotoxicidade induzida pelo lítio.

Lithium is widely used in the therapy of bipolar disorder. Its toxicity includes urinary concentration deficit and natriuresis, renal tubular acidosis, tubulointerstitial nephritis which complicates with chronic kidney disease and hypercalcemia. The most common adverse effect is diabetes insipidus, which occurs in 20-40% of patients some weeks after initiation of treatment. Such chronic nephropathy correlates with duration of lithium use. Early detection of renal dysfunction should be achieved by rigorous monitoring of patients and collaboration between the psychiatrist and nephrologist. Recent experimental and clinical studies are now clarifying the mechanisms by which lithium induces renal abnormalities. The aim of this work is to review the pathogenesis, clinical presentation, histopathologic aspects and treatment of lithium nephrotoxicity.