Also found in: Dictionary, Thesaurus, Medical, Wikipedia.


Inflammation of muscle. Also known as fibromyositis.



inflammation of skeletal muscles. It usually affects the entire muscular system, that is, it occurs as polymyositis.

Myositis can occur in a variety of diseases and is generally a sign of collagen diseases, that is, systemic diseases of connective tissue. The disease may be acute, subacute, or chronic. Muscle symptoms are often combined with skin disturbances (reddening, edema, induration)—dermatomyositis. A particular form of the disease is parasitic myositis, which results from parasites (Trichinella, Echinococcus, Cysticercus) invading muscles. Another form is myositis ossificans, in which bony tissue forms in muscles. Patients complain of pain in the muscles, muscular weakness, and incoordination; muscular sclerosis and contractures develop in the later stages of the disease. Treatment includes hormone therapy, vitamin therapy, administration of analgesics, and, when indicated, antiparasitic therapy.


Hausmanowa-Petrusewicz, I. Myshechnye zabolevaniia. Warsaw, 1971. (Translated from Polish.)


References in periodicals archive ?
The differential considerations of proliferative myositis are broad and contain common entities such as trauma and myositis ossificans, but also more rare diagnoses including inflammatory myopathies and malignancy.
We report an unusual case of dermatomyositis, where myositis was a late development in the course of disease, which evolved over a 4 year period.
Interleukin-17 increases the effects of IL-1 beta on muscle cells: Arguments for the role of T cells in the pathogenesis of myositis.
Development and initial validation of myositis activity and damage indices in patients with adult onset disease.
The clinical, laboratory and imaging findings are here presented of a female with focal myositis.
The Cure JM Foundation is a volunteer-driven nonprofit organization dedicated to finding a cure for Juvenile Myositis (JM).
Despite the administered therapy, the laboratory findings got worse: an increase of leukocytes, anemia, thrombocytopenia, hypoalbuminemia, CPK 176 421 (below 168 U/l), AST 3080 (below 37 U/l), ALT 467 (below 40 U/l), LDH 3209 (below 460 U/l) and after 24 hours the patient was transferred to the Clinic of Infectious Diseases for suspected sepsis and infectious myositis.
The report provides comprehensive information on the therapeutics under development for Inclusion Body Myositis (IBM), complete with analysis by stage of development, drug target, mechanism of action (MoA), route of administration (RoA) and molecule type.
In patients with neuromuscular disorders such as inclusion body myositis, persistent cTnT and CK-MB increases without cTnl increases have been reported (2, 3).
Other findings included myositis (6%), conjunctivitis (4%), eruption (4%), hepatitis (2%), and myocarditis (1%).
Myositis ossificans traumatica in young children: report of three case and review of literature.