Infantile polymyositis: A case report

Toshiro Nagai, Tomonobu Hasegawa, Masamine Saito, Shuuhei Hayashi, Ikuya Nonaka

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


A 10-month-old Japanese boy developed progressive muscle weakness and hypotonia at 3 months of age. Because of striking inflammatory cellular infiltration in his muscle biopsy, he was diagnosed as having infantile polymyositis and was placed on steroid and immunosuppressive medication when he was 10-month-old. His physical condition was not significantly altered, though serum creatine kinase (CK) level was normalized (1,500 iu/l → 90 iu/l). These findings contrast with previous reports documenting improvement with steroid administration.

Original languageEnglish
Pages (from-to)167-169
Number of pages3
JournalBrain and Development
Issue number3
Publication statusPublished - 1992 Jan 1
Externally publishedYes


  • Infantile polymyositis
  • congenital muscular dystrophy
  • nuclear change

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Developmental Neuroscience
  • Clinical Neurology


Dive into the research topics of 'Infantile polymyositis: A case report'. Together they form a unique fingerprint.

Cite this