Euthyroid sick syndrome, sick euthyroid syndrome, non-thyroidal illness syndrome or low T3 low T4 syndrome is a state of adaptation or dysregulation of thyrotropic feedback control where the levels of T3 and/or T4 are at unusual levels, but the thyroid gland does not appear to be dysfunctional. This condition is often seen in starvation, critical illness or patients in intensive care unit.
Read more about Euthyroid Sick Syndrome: Causes, Diagnosis, Therapy
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