Myositis
Encyclopedia
Myositis is a general term for inflammation
of the muscle
s. Many such conditions are considered likely to be caused by autoimmune conditions, rather than directly due to infection
(although autoimmune conditions can be activated or exacerbated by infections.) It is also a documented side effect of the lipid-lowering drugs statins and fibrates.
Elevation of creatine kinase
in blood is indicative of myositis.
Inflammation
Inflammation is part of the complex biological response of vascular tissues to harmful stimuli, such as pathogens, damaged cells, or irritants. Inflammation is a protective attempt by the organism to remove the injurious stimuli and to initiate the healing process...
of the muscle
Muscle
Muscle is a contractile tissue of animals and is derived from the mesodermal layer of embryonic germ cells. Muscle cells contain contractile filaments that move past each other and change the size of the cell. They are classified as skeletal, cardiac, or smooth muscles. Their function is to...
s. Many such conditions are considered likely to be caused by autoimmune conditions, rather than directly due to infection
Infection
An infection is the colonization of a host organism by parasite species. Infecting parasites seek to use the host's resources to reproduce, often resulting in disease...
(although autoimmune conditions can be activated or exacerbated by infections.) It is also a documented side effect of the lipid-lowering drugs statins and fibrates.
Elevation of creatine kinase
Creatine kinase
Creatine kinase , also known as creatine phosphokinase or phospho-creatine kinase , is an enzyme expressed by various tissues and cell types. CK catalyses the conversion of creatine and consumes adenosine triphosphate to create phosphocreatine and adenosine diphosphate...
in blood is indicative of myositis.
Types
Types of myositis include:- myositis ossificansMyositis ossificansMyositis ossificans comprises two syndromes characterized by heterotopic ossification of muscle.-Classification:* In the first, and by far most common type, nonhereditary myositis ossificans , calcifications occur at the site of injured muscle, most commonly in the arms or...
- fibromyositis
- (idiopathic) inflammatory myopathiesInflammatory myopathyInflammatory myopathy is a form of myopathy that involves inflammation of the muscle.Inflammatory myopathy is generally synonymous to the term dermatopolymyositis, which, according to ICD-10 encompasses three related diseases: polymyositis, dermatomyositis, and inclusion-body...
- dermatomyositisDermatomyositisDermatomyositis is a connective-tissue disease related to polymyositis and Bramaticosis that is characterized by inflammation of the muscles and the skin.- Causes :...
- juvenile dermatomyositisJuvenile dermatomyositisJuvenile dermatomyositis is an autoimmune disease causing vasculitis that manifests itself in children; it is the pediatric counterpart of dermatomyositis. In JDMS, the body's immune system attacks blood vessels throughout the body, causing inflammation called vasculitis...
- juvenile dermatomyositis
- polymyositisPolymyositisPolymyositis is a type of chronic inflammation of the muscles related to dermatomyositis and inclusion body myositis.-Signs and symptoms:...
- inclusion body myositisInclusion body myositisInclusion body myositis is an inflammatory muscle disease, characterized by slowly progressive weakness and wasting of both distal and proximal muscles, most apparent in the muscles of the arms and legs...
- dermatomyositis
- pyomyositisPyomyositisPyomyositis, also known as tropical pyomyositis or myositis tropicans, is a bacterial infection of the skeletal muscles which results in a pus-filled abscess. Pyomyositis is most common in tropical areas but can also occur in temperate zones....
See also
- myopathyMyopathyIn medicine, a myopathy is a muscular disease in which the muscle fibers do not function for any one of many reasons, resulting in muscular weakness. "Myopathy" simply means muscle disease...
(muscle disease) - myalgiaMyalgiaMyalgia means "muscle pain" and is a symptom of many diseases and disorders. The most common causes are the overuse or over-stretching of a muscle or group of muscles. Myalgia without a traumatic history is often due to viral infections...
(muscle pain) - Masticatory muscle myositisMasticatory muscle myositisMasticatory muscle myositis is an inflammatory disease in dogs affecting the muscles of mastication . It is also known as atrophic myositis or eosinophilic myositis. MMM is the most common inflammatory myopathy in dogs. The disease mainly affects large breed dogs. German Shepherd Dogs and...
(a disease in dogs)