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Thyrotoxic myopathy (TM) is a neuromuscular disorder that develops due to the overproduction of the thyroid hormone thyroxine. Also known as hyperthyroid myopathy , TM is one of many myopathies that lead to muscle weakness and muscle tissue breakdown.
Thyrotoxic periodic paralysis (TPP) is a rare condition featuring attacks of muscle weakness in the presence of hyperthyroidism (overactivity of the thyroid gland). Hypokalemia (a decreased potassium level in the blood) is usually present during attacks.
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 ...
Blood tests may be performed to exclude other causes of muscle disease (elevated creatine kinase may indicate a myositis, and abnormal thyroid function tests may indicate thyrotoxic myopathy). Antibodies against voltage-gated calcium channels can be identified in 85% of people with EMG-confirmed LEMS. [ 4 ]
Periodic paralysis is an autosomal dominant myopathy with considerable variation in penetrance, leading to a spectrum of familial phenotypes (only one parent needs to carry the gene mutation to affect the children, but not all family members who share the gene are affected to the same degree).
Propylthiouracil (PTU) is a medication used to treat hyperthyroidism. [3] This includes hyperthyroidism due to Graves' disease and toxic multinodular goiter. [3] In a thyrotoxic crisis it is generally more effective than methimazole. [3]
Pain control only necessitates symptomatic treatment with non-steroidal anti-inflammatory medications or aspirin. [2] Severely sick individuals may benefit from glucocorticoid medication, which often produces a substantial response in 24 to 48 hours. [4] Thyrotoxic symptoms are managed with beta-adrenergic blockers such atenolol and propranolol ...
8-25% mortality with treatment; 80-100% mortality if untreated Thyroid storm is a rare but severe and life-threatening complication of hyperthyroidism . It occurs when an overactive thyroid leads to hypermetabolism , which can cause death from cardiac arrest or multiple organ failure .