Synonyms : Low T3 High T4 Syndrome, Low T3 and Low T4 Syndrome, Low T3-High T4 Syndrome, Low T3-Low T4 Syndrome, Non-Thyroidal Illness Syndrome, Sick Euthyroid Syndrome, Euthyroid Sick Syndrome, High T4 Syndromes, Low T3 Low T4 Syndrome, Non Thyroidal Illness Syndrome