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Thyrotoxic periodic paralysis

  • Definition

    Thyrotoxic periodic paralysis is a condition in which there are episodes of muscle weakness in people with high levels of thyroid hormone (hyperthyroidism, thyrotoxicosis).


    Alternative Names

    Periodic paralysis - thyrotoxic


    Causes, incidence, and risk factors

    Thyrotoxic periodic paralysis is a rare condition that occurs only in people with high thyroid hormone levels (thyrotoxicosis). It is seen most commonly in Asian men.

    There is a similar disorder, hypokalemic periodic paralysis (familial periodic paralysis). This is an inherited condition and does not have high thyroid levels.

    Risk factors include a family history of periodic paralysis and hyperthyroidism.