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The assumed cause of muscle hypertrophy in KDSS is an abnormal metabolism of carbohydrates leading to increased glycogen accumulation and increased mucopolysaccharide deposits in the muscles. [13] Yet another speculation is an excess intra cellular calcium due to ineffective reuptake into the sarcoplasmic reticulum, which causes a sustained ...
Various authors have suggested that thyrotoxic myopathy is a result of the weight loss and generalized asthenia associated with hyperthyroidism. Muscle involvement has been reported to occur in about 80% of thyrotoxic patients (see section #Epidemiology), [7] and the most common causes of hyperthyroidism are Graves’ disease, toxic ...
Damage to neurons in the brain or spinal cord can cause prominent muscle atrophy. This can be localized muscle atrophy and weakness or paralysis such as in stroke or spinal cord injury. [14] More widespread damage such as in traumatic brain injury or cerebral palsy can cause generalized muscle atrophy. [15]
Biotin can cause this test to read "falsely low". [22] Time of day can affect the results of this test; TSH peaks early in the morning and slumps in the late afternoon to early evening, [65] with "a variation in TSH by a mean of between 0.95 mIU/mL to 2.0 mIU/mL". [66] Hypothyroidism is diagnosed more often in samples taken soon after waking. [67]
Muscle weakness is a lack of muscle strength. 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.
Thyroid disease is a medical condition that affects the structure and/or function of the thyroid gland.The thyroid gland is located at the front of the neck and produces thyroid hormones [1] that travel through the blood to help regulate many other organs, meaning that it is an endocrine organ.
Corticosteroids often cause muscle weakness to some degree in patients. Symptoms are usually weakness of the proximal muscles, neck flexor, and in extreme cases, respiratory muscle weakness can also occur. [1] Corticosteroids have not only been found to cause some degree of muscle atrophy, but also a local or diffuse cell death.
Hoffmann syndrome is a rare form of hypothyroid myopathy and is not to be confused with Werdnig-Hoffmann disease (a type of spinal muscular atrophy). It was first documented in 1897 by Johann Hoffmann. [1] It has adult-onset symptoms and is comparable to the childhood-onset Kocher–Debré–Semelaigne syndrome.