polymyositis

noun poly·myo·si·tis \ ˌpä-lē-ˌmī-ə-ˈsī-təs \

Definition of polymyositis

: inflammation of several muscles at once; specifically : an inflammatory muscle disease of unknown cause that affects muscles and chiefly skeletal muscles and is characterized especially by weakness of the muscles (such as those of the shoulder, neck, or hip) closest to the trunk — see dermatomyositis

First Known Use of polymyositis

1877

in the meaning defined above

See Words from the same year
NEW! Time Traveler

Medical Dictionary

polymyositis

noun poly·myo·si·tis \ -ˌmī-ə-ˈsīt-əs \

medical Definition of polymyositis

: inflammation of several muscles at once; specifically : an inflammatory disease of unknown cause that affects muscles and especially skeletal muscles, is characterized typically by weakness usually of the proximal muscles (such as those of the shoulder or pelvic girdles or of the neck), muscle and joint pain, pathological muscle changes (such as fiber degeneration or infiltration by lymphocytes), pneumonia, and cardiac abnormalities (such as arrhythmia or myocarditis)
  • Dermatomyositis affects both children and adults, and females more often than males, whereas polymyositis is seen after the second decade of life and very rarely in childhood.
  • —Marinos C. DalakasThe New England Journal of Medicine21 Nov. 1991
— see dermatomyositis

Learn More about polymyositis


Seen and Heard

What made you want to look up polymyositis? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

unwilling or reluctant

Get Word of the Day daily email!

Test Your Vocabulary

Odd Habits and Quirks Quiz

  • image1926873504
  • Which of the following best describes an easily irritated person?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!