This is a different expert. Im sorry to hear about your symptoms.
Well while i can understand the situation that you are in, potassium iodide would NOT cause a thyroid storm or even thyrotoxicosis. This is because if potassium iodide is taken in large amounts it would cause the opposite effect on the thyroid, namely it would cause inhibition of the release of thyroid hormones from the thyroid gland. This would lead to severe hypothyroidism and in turn would cause symptoms like fatigue, weakness, swelling all over the body, hair loss, slow reflexes etc. In severe hypothyroidism, a patient can even fall unconscious.
HOWEVER, it has been documented that when potassium iodide is given in patients who have an hyperactive thyroid gland or a thyroid gland which has a hot nodule (overactive nodule in the gland) it can cause a paradoxical effect on the thyroid and cause release of excess thyroid hormones.Iodide may induce hyperthyroidism, called the Jod-Basedow effect, when given to patients with preexisting iodide deficiency or autonomous, "hot" thyroid nodules. So this means that if your hashimotos thyroiditis was in the stage where there is a transient increased release of thyroid hormones then it is very possible that you could go into thyroid storm. This would cause the symptoms which you have mentioned.
So it all depends on the state your thyroid was in at the time of ingestion of the tablets, if the thyroid was hyperactive then it can cause a thyroid storm like illness. If the thyroid was in an underactive state, then it would cause a state of severe hypothyroidism.
So all in all, it is possible that your mystery illness was the result of these tablets. It is equally possible that you were being given supplemental thyroid hormones rather than potassium iodide tablets. This would have been detected on thyroid function tests, if they were done during an attack. Lastly the illness that you had could also be the result of something like a sudden release of serotonin in the body from a small tumor. This is known as carcinoid syndrome. It would be worthwhile looking into this possibility along with the usual causes such as arrhythmias, recurrent hypoglycemia etc as well.
Do you have any more questions?
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