Occupational low back pain has multifactorial etiology and elevated incidence and prevalence. It is characterized by pain of varying intensity and duration and can lead to work incapacity and invalidity. Low back pain causes workers to suffer and increases the costs of employers and of social security and healthcare systems. The relevance of this subject led this paper's authors to undertake a bibliographic review with emphasis on the theoretical and conceptual background and on the experience of specialists.

Fibromyalgia (FM) is a clinical syndrome commonly observed in daily medical practice and its etiopathogenesis is still unclear. As it is characterized by chronic musculoskeletal pain associated with several symptoms, FM may be confused with several other rheumatic and nonrheumatic diseases when they course with pictures of diffuse pain and chronic fatigue. FM treatment should be multidisciplinary, individualized, count on active participation of the patient, and based on combined pharmacological and nonpharmacological modalities. It is found both in work and non-work settings, and there is no scientific evidence in the literature showing that FM might be caused by occupation. FM seldom leads to incapacity to work. In cases where pain or fatigue do not respond to appropriate treatment, reaching significant levels, a short period away from work can be considered. As FM is a relevant subject, this review article was based on exploratory, qualitative, and bibliographic investigation, aiming to study the main clinical and occupational aspects of FM, emphasizing the theoretical-conceptual background and the experience of specialists.

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The objective of this article is to highlight the ethical and legal elements that guide the work of professional colleagues, to bring attention to the discipline in the practice of medical acts, and to help avoiding conflicts between the different fields of expertise involved in law suits. UPDATE Civil act, 3 rd article: "No one is excused for not obeying the law, claiming not to know it." Recognizing that repetitive strain injuries (RSI) and workrelated musculoskeletal disorder (WRMD) are not diagnosis, but situations that may lead to injury, that this kind of injury is referred in sections 186 and 927 of the Civil Rights Code, 1 and that these diagnosis may create rights and obligations, the doctor who assists a patient with musculoskeletal diseases should have knowledge of the laws and regulations in our Civil Rights Code, Criminal Code, Ministry of Labor, Class Collective Convention, Medical Ethics Code, and the Ministry of Social Security. 2 It is necessary that these laws and

Evidence of the clinical, social, and economic impact of mistaken diagnoses of tendonitis and other chronic painful disorders are analyzed. The objective of this review is to call attention to the possible diagnostic hyper valuation of tendonitis, especially those supposedly multiple or refractory, based on evidence. A review of the literature on chronic painful disorders, such as fibromyalgia, in the context of mistaken diagnosis of tendonitis, as well a review of false positive and ultrasonographic (US) scan diagnostic parameters, is presented. Evidence of therapeutic mistakes were found in 41% and diagnostic mistakes in 70 to 85% of the cases, with proven unpreparedness regarding those disorders in up to 93.7% of the physicians. The diverse repercussions of this epidemic of mistakes are discussed.

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The Brazilian rheumatologists believe the following: the results of these exams should be interpreted with caution and are not definitive for diagnosis; musculoskeletal US and EMG should be performed by trained professionals; and there must be better preparation of the professionals who perform these exams.

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