inclusion body myositis

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Definition

Noun: - A specific inflammatory muscle disease: Inclusion body myositis (IBM) is a type of myositis (muscle inflammation) characterized by progressive muscle weakness. It typically affects specific limb muscles, such as those in the thighs, wrists, and fingers. The condition may also involve muscles used for swallowing. It is distinguished by its typical onset after age 50, its slow progression, and its higher prevalence in men compared to women.

Usage Examples
  • Noun:
    • The neurologist diagnosed the patient with inclusion body myositis after reviewing the muscle biopsy results.
    • Weakness in grip strength is a common early symptom of inclusion body myositis.
    • Research into new treatments for inclusion body myositis is ongoing.
Advanced Usage
  • "Sporadic inclusion body myositis (sIBM)": This is the full and most precise clinical term for the disease, distinguishing it from hereditary forms.
    • Sporadic inclusion body myositis is the most common muscle disease acquired after age 50.
Variants and Related Words
  • IBM: A common abbreviation for inclusion body myositis.
    • The support group is for individuals living with IBM.
  • Myositis (n): The general term for inflammation of the muscles, which is the broader category of disease.
    • Polymyositis and dermatomyositis are other forms of myositis.
  • Myopathy (n): A general term for any disease of the muscle tissue.
    • Inclusion body myositis is considered an inflammatory myopathy.
Synonyms
  • sIBM: Sporadic inclusion body myositis.
  • Inflammatory myopathy: A broader category that includes IBM.
Notes on Meaning

This term refers exclusively to a specific medical diagnosis. It is not used in a general or figurative sense. The name derives from the characteristic "inclusion bodies" (abnormal protein accumulations) observed within the muscle fibers under a microscope during a biopsy.

Noun
  1. myositis characterized by weakness of limb muscles (especially the thighs and wrists and fingers); sometimes involves swallowing muscles; onset after 50 and slowly progressive; seen more often in men than in women