Overlap myositis is a clinically heterogeneous and poorly recognized subtype of idiopathic inflammatory myopathy. Its incidence is unknown, mainly due to the lack of determination of myositis-associated antibodies (MAA). We present the case of a Colombian 34-year-old woman with generalized myalgias, asthenia, anorexia, self-limited febrile peaks, dyspnea and dysphagia. After medical evaluation and complementary tests, a definitive diagnosis was reached with the positivity of anti-Ku and anti-RNP antibodies.La miositis por solapamiento u overlap es un subtipo clínicamente heterogéneo y poco reconocido de miopatía inflamatoria idiopática. Su incidencia es desconocida, fundamentalmente por la falta de determinación de los anticuerpos asociados a miositis (AAM). Presentamos el caso de una mujer de 34 años colombiana que acudió por presentar mialgias generalizadas, astenia, anorexia, sensación febril, disnea y disfagia. Tras la valoración médica y las pruebas complementarias se precisó de la positividad de los anticuerpos anti-Ku y anti-RNP para la confirmación diagnóstica
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