STUDY AIM: Analysis of the course of benign acute childhood myosistis during the influenza epidemic of 2012/2013, with a focus on the clinical specificities, laboratory findings, diagnostic and therapeutic approaches, and prognosis. METHODS: A retrospective study was conducted of 10 @entity1 with @entity5442 during @entity281 . The haematological and biochemistry parameters were analysed. A direct real time-PCR assay was used to detect the virus from nasopharyngeal swabs. RESULTS: Eight of 10 @entity1 were males of an average age of 7.1 years. @entity121 emerged during recovery from influenza. They were characterized by a sudden onset of severe @entity158 in the @entity291 muscles with the consequent inability to walk in nine @entity1 . Toe walking was reported in six @entity1 and wide-base gait in one @entity1 . The full blood count showed @entity1431 (eight cases) and @entity882 (five cases). Blood biochemistry typically detected elevated muscle enzymes ( @entity908 kinase and @entity5906 aminotransferase) and elevated @entity5632 in all @entity1 . Influenza B was confirmed in all study @entity1 . They all recovered spontaneously within two to four days. CONCLUSIONS: Benign acute childhood @entity5442 presents with the clinical picture of transient @entity121 resulting in difficulty walking and very rarely can be complicated by @entity5925 and @entity177 . It is most often associated with influenza B and affects school age @entity1 , mostly males. Good awareness of the condition facilitates the differential diagnosis and enables to rule out other more serious causes of difficulty walking. Symptomatic therapy is an adequate option and the @entity1 recovers spontaneously within a couple of days. Early recognition of the disease avoids unnecessary diagnostic and therapeutic interventions.

[Benign acute childhood XXXX as a complication of influenza B and its differential diagnosis].

@entity1 :: ('9606', 'Species') :: ['children', 'patients', 'patient'] @entity291 :: ('9913', 'Species') :: ['calf'] @entity5442 :: ('MESH:D009220', 'Disease') :: ['myositis'] @entity882 :: ('MESH:D013921', 'Disease') :: ['thrombocytopenia'] @entity908 :: ('MESH:D003401', 'Chemical') :: ['creatine'] @entity5906 :: ('D001224', 'Chemical') :: ['aspartate'] @entity177 :: ('MESH:D051437', 'Disease') :: ['kidney failure'] @entity281 :: ('MESH:D007239', 'Disease') :: ['influenza infection'] @entity5925 :: ('MESH:D012206', 'Disease') :: ['rhabdomyolysis'] @entity1431 :: ('MESH:D007970', 'Disease') :: ['leukopenia'] @entity158 :: ('MESH:D010146', 'Disease') :: ['pain'] @entity5632 :: ('4151', 'Gene') :: ['myoglobin'] @entity121 :: ('MESH:D009135', 'Disease') :: ['Muscle disorders', 'muscle disorders']
@entity5442 :: (MESH:D009220,Disease) :: ['myositis']
