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Benign acute childhood myositis: Difference between revisions

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→‎Diagnosis: kidney failure
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==Diagnosis==
The history of a preceding influenza-like infection followed by the typical symptoms of acute onset of symmetrical calf pain and gait problems together with an isolated finding of a high level of [[creatine kinase]] suggests the diagnosis of BACM.<ref name=chu>{{cite journal| vauthors=Chu EC, Yip AS| title= A rare presentation of benign acute childhood myositis |journal=Clin Case Rep |year=2019 |volume=7 |issue=3 |pages=461–464 |doi=10.1002/ccr3.2001 |PMID=30899472}}</ref> [[Myoglobinuria]] is rare and points to the possibility of the development of rhabdomyolysis and kidney failure.<ref name=azevedo/><ref name=cassim>{{cite web|vauthors=Cassim F, Soni AJ, Murphy S|title=Severe acute inflammatory myositis and rhabdomyolysis in paediatric SARS-CoV-2-associated MIS-C (multisystem inflammatory syndrome in children)|jounal=BMJ Case Reports|volume 14 |issue 8|year=2021|doi=10.1136/bcr-2021-243112|PMID=34373240}}</ref>
 
[[Guillain-Barré syndrome]] (GBS) is the main consideration in the differential diagnosis. It needs to be quickly excluded as early intervention in GBS is indicated. Other conditions under possible consideration are [[dermatomyositis]], [[muscular dystrophy]], [[juvenile idiopathic arthritis]], [[transient synovitis of the hip]], [[osteomyelitis]], and [[myalgia]].<ref name=brisca/>