Low t3 syndrome

Low T3 Syndrome

Low T3 Syndrome (pronounced as "low tee three syndrome"), also known as Euthyroid Sick Syndrome or Non-thyroidal Illness Syndrome (NTIS), is a condition characterized by abnormal thyroid hormone metabolism. This condition is often observed in patients with critical illness, fasting, or starvation.

Etymology

The term "Low T3 Syndrome" is derived from the condition's characteristic low levels of the thyroid hormone Triiodothyronine (T3). The term "Euthyroid Sick Syndrome" refers to the fact that despite the abnormal thyroid hormone levels, the thyroid gland itself is typically normal (euthyroid).

Symptoms

Symptoms of Low T3 Syndrome can vary widely and often mimic those of other illnesses. Common symptoms include fatigue, weight gain, cold intolerance, and depression. However, many patients with Low T3 Syndrome do not exhibit any symptoms, making the condition difficult to diagnose.

Diagnosis

Diagnosis of Low T3 Syndrome is typically made through blood tests that measure levels of thyroid hormones. In Low T3 Syndrome, levels of T3 are low, while levels of the thyroid hormone Thyroxine (T4) and Thyroid Stimulating Hormone (TSH) may be normal or slightly elevated.

Treatment

Treatment for Low T3 Syndrome typically involves addressing the underlying illness or condition causing the abnormal thyroid hormone levels. In some cases, supplementation with synthetic T3 may be recommended.

Related Terms

• Thyroid
• Triiodothyronine
• Thyroxine
• Thyroid Stimulating Hormone
• Euthyroid
• Starvation

External links

• Medical encyclopedia article on Low t3 syndrome
• Wikipedia's article - Low t3 syndrome

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