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Its causes are many and can be divided into conditions that have either true or perceived muscle weakness. True muscle weakness is a primary symptom of a variety of skeletal muscle diseases, including muscular dystrophy and inflammatory myopathy. It occurs in neuromuscular junction disorders, such as myasthenia gravis. Muscle weakness can also ...
Physical symptoms of TM may include muscle weakness, the breakdown of muscle tissue, fatigue, and heat intolerance. [2] Physical acts such as lifting objects and climbing stairs may become increasingly difficult. [3] If untreated, TM can be an extremely debilitating disorder that can, in extreme rare cases, lead to death.
Distal muscular dystrophy, also called distal myopathy, is essentially any muscle disease that preferentially affects the hands and/or feet, a much less common pattern than proximal muscle weakness. Late adult-onset type 1; Late adult-onset type 2a; Late adult-onset type 2b; Early adult-onset type 1; Early adult-onset type 2; Early adult-onset ...
The causes are many and can be divided into conditions that have either true or perceived muscle weakness. True muscle weakness is a primary symptom of a variety of skeletal muscle diseases, including muscular dystrophy and inflammatory myopathy. It occurs in neuromuscular diseases, such as myasthenia gravis. Perceived muscle weakness occurs in ...
A neuromuscular disease is any disease affecting the peripheral nervous system (PNS), [a] the neuromuscular junctions, or skeletal muscles, all of which are components of the motor unit. [4] Damage to any of these structures can cause muscle atrophy and weakness. Issues with sensation can also occur. Neuromuscular diseases can be acquired or ...
The intensity of the symptoms may progress over the course of hours, days or weeks, culminating in a symmetric paralysis of the arms and legs, which can range from mild to more severe — and in ...
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 ...
On electron microscopy, nemaline bodies within the affected muscle fibers may be found. These bodies are sometimes crisply rod-shaped, but can also be irregular and punctate. The rods may be found alongside atrophic muscle fibers, and may be seen arising from the thickened Z-discs of the sarcolemmae. Affected fibers may be vacuolated or ...