The thyroid profile consist of three hormone levels, t3, t4 and tsh.The hypothyroidism
is decreased levels of thyroid hormone in blood which in turn causes increased TSH levels.
The hypothyroidism causes the symptoms of hair loss, fatigue, sleepiness, depression, weight gain, cold intolerance etc.
here is the link for more information
symptoms of hypothyroidism
The hyperthyroidism is increased thyroid hormone secretion by thyroid glands and causes weight loss, tachycardia, nervousness, anxiety, fatigue and muscle weakness, etc.
The fatigue may be the symptoms of hypo/hyperthyroidism so you should get the thyroid profile checked like free t3, free t4 and serum TSH levels to know the underlying abnormality after consulting your doctor/endocrinologist.
If it is hypothyroidism then low dose thyroxine therapy will be helpful for you.
Here is the link for more information on hyperthyroidism
symptoms of hyperthyroidism
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