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The complications of Hypothyroidism
are mostly cardiac in nature. Too vigorous thyroid therapy may precipitate a heart failure
. Also adrenal crisis is precipitated by thyroid therapy. Severe hypothyroidism can cause myxedema coma
with severe hypoventilation
, low body temperature, low sodium levels, hypoxia and hypotension. In all these situations there is a possibility of fainting. Get the thyroid levels checked up. Also get electrolytes, routine blood tests done. A good clinical examination by a specialist will give the cause.
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