J Korean Thyroid Assoc.
2011 Nov;4(2):123-126.
A Case of 36-Year-Old Man with Normokalemic Thyrotoxic Periodic Paralysis
- Affiliations
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- 1Department of Internal Medicine, Gyeongsang Institute of Health Science, Gyeongsang National University School of Medicine, Jinju, Korea. taesikjung@gmail.com
Abstract
- Thyrotoxic periodic paralysis is not a rare complication of hyperthyroidism in Asian people, but the cases of paralysis with normal serum potassium levels are very rare. A 36-year-old Korean man who had been diagnosed with Graves' disease had experienced recurrent paralysis for 9 months in spite of normokalemia. We measured the patient's serum potassium levels nine times at the time of paralysis. All measurements fell in the range 3.3~4.7 mmol/L. We treated the patient with methimazole, Lugol's solution, beta-blockers, and radioactive iodine. Thyroid function was normalized after anti-thyroid treatment and then no further paralytic attacks have occurred.