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In medicine, myopathy is a disease of the muscle [1] in which the muscle fibers do not function properly. Myopathy means muscle disease (Greek : myo- muscle + patheia -pathy : suffering). This meaning implies that the primary defect is within the muscle, as opposed to the nerves ("neuropathies" or "neurogenic" disorders) or elsewhere (e.g., the ...
Autophagic vacuolar myopathy (AVM) consists of multiple rare genetic disorders with common histological and pathological features on muscle biopsy. [1] The features highlighted are vacuolar membranes of the autophagic vacuoles having sarcolemmal characteristics and an excess of autophagic vacuoles. [ 2 ]
Mitochondrial myopathies are types of myopathies associated with mitochondrial disease. [1] Adenosine triphosphate (), the chemical used to provide energy for the cell, cannot be produced sufficiently by oxidative phosphorylation when the mitochondrion is either damaged or missing necessary enzymes or transport proteins.
Inflammatory myopathy, also known as idiopathic inflammatory myopathy (IIM), is disease featuring muscle weakness, inflammation of muscles , and in some types, muscle pain . The cause of much inflammatory myopathy is unknown ( idiopathic ), and such cases are classified according to their symptoms and signs , electromyography , MRI , and ...
Inclusion body myopathy with early-onset Paget disease and frontotemporal dementia (IBMPFD), now more commonly referred to as multisystem proteinopathy (MSP), is an autosomal dominant condition caused by mutations in VCP, HNRPA2B1 or HNRNPA1; it is a multisystem degenerative disorder that can affect muscle, bone, and/or the central nervous system.
Metabolic myopathies are myopathies that result from defects in biochemical metabolism that primarily affect muscle. They are generally genetic defects ( inborn errors of metabolism ) that interfere with the ability to create energy, causing a low ATP reservoir within the muscle cell.
Cardiomyopathy is a group of primary diseases of the heart muscle. [1] Early on there may be few or no symptoms. [1] As the disease worsens, shortness of breath, feeling tired, and swelling of the legs may occur, due to the onset of heart failure. [1]
Thyrotoxic myopathy is usually diagnosed by a neurologist who has extensive experience diagnosing neuromuscular disorders. There are many types of neuromuscular disorders that present similar physical symptoms. Extensive clinical tests are performed first to determine if there is a neuromuscular disorder and then to determine which disorder it is.