I found one line in my notes relating to this for you –
The Thyroid (Physiology and Treatment of Disease)
International Encyclopedia of Pharmacology & Therapeutics) Section 101
Eidtiors Jerome Hershman and George Bray
page 178 “There is an association between hyperthyroidism and sporadic
hypokalemic periodic paralysis wihich is particularly evident in Japanese
and Chinese (Engel,1961)and usually found during the course of active
hyperthyroidism. The attacks often disappear once the hypethyroidism is
controlled.(Skillern,1952) Onset of muscle cramps and arthralgias during
treatment should alert the clinician to the possible development of
hypothryoidism as athralgias are a common and early sign of hypo-
thryoidism and are not associated with hyperthyroidism.”
