Patient: Examination and laboratory tests: hyperthyroidism, periodic paralysis due to hyperthyroidism. Protruding eyes. Cannot move limbs and waist in severe cases. Treatment: I had hyperthyroidism surgery in 2004. After the surgery, I had paralysis of the limbs when I was cold or hungry. Medical history: From 1998 to 2004, the hyperthyroidism healed after surgery, but the periodic paralysis caused by hyperthyroidism is much better than before the surgery. Can thyroid surgery be treated with 131I and can periodic paralysis be cured after treatment? Jia Hongli: What are the indicators now? 131I treatment is not affected after surgery, which is precisely the indication. If the periodic paralysis is caused by hyperthyroidism, it can be recovered if the hyperthyroidism is cured.