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There are many proposed causes of sarcopenia and it is likely the result of multiple interacting factors. Understanding of the causes of sarcopenia is incomplete, however, changes in hormones, immobility, age-related muscle changes, nutrition, and neurodegenerative changes have all been recognized as potential causative factors.
Frailty can have various symptoms including muscle weakness (reduced grip strength), slower walking speed, exhaustion, unintentional weight loss, and frequent falls. [3] [4] Older people with certain medical conditions such as diabetes, heart disease and dementia, are also more likely to have frailty.
Idiopathic primary BSS is a late-onset myopathy with progressive muscular weakness that is detected on the spinal extensor muscles in elderly patients and is more predominant in females. [2] The pathogenesis of primary BSS is typically related to fibrosis and fatty infiltration of muscular tissues and to mitochondrial changes due to the aging ...
Sudden falls, sometimes resulting in major injury to the skull or other bones, can occur, even from walking on minimally irregular ground or from other minor imbalances outside or in the home, due to weakness of quadriceps and gluteus muscles depriving the patient of automatic posture maintenance.
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 ...
Muscle atrophy is the loss of skeletal muscle mass. It can be caused by immobility, aging, malnutrition, medications, or a wide range of injuries or diseases that impact the musculoskeletal or nervous system. Muscle atrophy leads to muscle weakness and causes disability.
Myasthenia or myasthaenia (my- from Greek: μυο meaning "muscle" + -asthenia [ἀσθένεια] meaning "weakness"), or simply muscle weakness, is a lack of muscle strength. 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 ...
Rhabdomyolysis (shortened as rhabdo) is a condition in which damaged skeletal muscle breaks down rapidly, often due to high intensity exercise over a short period. [6] [4] [5] Symptoms may include muscle pains, weakness, vomiting, and confusion.