Hey, thanks for the quick response. One more question, please. What is the treatment for Hashitoxicosis?
No - it is possible to have "symptoms" of both -- but the symptoms are not specific -- so many people (even w/o thyroid disease) report symptoms that are seen in both hypo and hyperthyroid.
It is possible to swing back and forth between the two -- usually over several weeks/months (ie, not rapid, day-to-day cycling) -- this is often called Hashitoxicosis.