Reyes BML, Vázquez BJ, Contreras VLM

Language: Spanish
References: 14
Page: 79-82
PDF size: 158.56 Kb.

ABSTRACT

Introduction: we present the case of a six year old school boy diagnosed with benign acute viral myositis caused by influenza virus type B. Benign acute myositis is a little known and infrequent complication, mainly caused by type A or B influenza viruses, which occurs in school patients. The clinical and laboratory findings are very characteristic and allow rapid diagnosis during the influenza season. Objectives: to describe the clinical case of a school patient with a diagnosis of acute viral myositis; accompanied by a bibliographic review of the subject to make known the characteristics of benign acute myositis in pediatric patients in order to make a timely diagnosis. An online review was performed in PubMed and Google Scholar, using the keywords influenza, myositis, pediatric. Subsequently, a clinical case with a diagnosis of benign acute myositis due to influenza type B was described. Conclusion: benign acute myositis should be suspected in children presenting with sudden onset muscle weakness and a history of respiratory infections. Our patient had clinical symptoms of pain and weakness in the lower extremities; the clinical presentation, the time of the year and the increase in CPK (creatine phosphokinase) were decisive in the diagnosis, in addition, the presence of influenza type B was detected in FilmArray^® respiratory panel (18 viruses and four bacteria), which confirmed the etiology of acute myositis.

REFERENCES

1. Reyes Berlanga M. Influenza. Prontuario de infectología pediátrica. Asociación Mexicana de Infectología Pediátrica. 2021; 7: 558-569.

2. Cavagnaro SMF, Harwardt I, Aird GA, Marambio QCG. Miositis aguda benigna de la infancia. Serie clínica y revisión de la literatura. Rev Chil Pediatr. 2017; 88 (2): 268-274.

3. Padrón Hernández ML, Vargas Latorre JR, Ortegón Ochoa S, Naranjo Medina N, Pacheco B. Miositis viral, reporte de un caso pediátrico. Arch Argent Pediatr. 2019; 117 (5): 493-496.

4. García Ros M, Núñez Giralda A, Delgado Fuentes E. Miositis viral aguda: a propósito de ocho casos. Rev Pediatr Aten Primaria. 2017; 19 (76): 363-365.

5. González Conde MV, Fernández Martínez MN, del Río Pastoriza I, Sanmartín Rodríguez D, Cameán Hermo MS. Miositis viral aguda: a propósito de un caso. Acta Pediatr Esp. 2009; 67 (4): 192-193.

6. Zaldibar-Barinaga MB, Hernández-Sendin MI, Múgica-Samperio C, San Sebastián-Herrero A. Tratamiento rehabilitador en la miositis aguda benigna infantil. Rehabilitacion (Madr). 2010; 44 (4): 384-386.

7. Magee H, Goldman RD. Viral myositis in children. Can Fam Physician. 2017; 63 (5): 365-368.

8. Kerr J, Macartney K, Britton PN. Influenza-associated myositis: a single-centre, 5-year retrospective study. Eur J Pediatr. 2021; 180 (2): 577-584.

9. Szenborn L, Toczek-Kubicka K, Zaryczanski J, Marchewka-Kowalik M, Miskiewicz K, Kuchar E. Benign acute childhood myositis during influenza b outbreak. Adv Exp Med Biol. 2018; 1039: 29-34.

10. Muñoz García M, Valverde Molina J, Díez Lorenzo P, Cámara Simón M. Miositis viral aguda. ¿Es necesaria la confirmación etiológica? An Esp Pediatr. 1998; 48: 333-334.

11. Rubín E, De la Rubia L, Pascual A, Domínguez J, Flores C. Benign acute myositis associated with H1N1 influenza A virus infection. Eur J Pediatr. 2010; 169 (9): 1159-1161.

12. Tekin E, Akoglu HA. From influenza to SARS-CoV-2: etiological evaluation of acute benign childhood myositis. Acta Neurol Belg. 2022; 122 (4): 1043-1047.

13. Acosta Torres J, Rodríguez Prieto M, Álvarez Echaide Y, Pérez Cutiño M. Miositis aguda benigna epidémica por influenza B en pacientes pediátricos. Rev Cubana Pediatr. 2020; 92 (3): e1061.

14. Agyeman P, Duppenthaler A, Heininger U, Aebi C. Influenza-associated myositis in children. Infection. 2004; 32: 199-203.