What does it mean when TSH (thyroid-stimulating hormone) is 5.4 mIU/L, and what should I do?

　　A TSH (thyroid-stimulating hormone) level of 5.4 mIU/L may be caused by factors such as medication effects, viral infections, hypothyroidism, thyroid nodules, or pituitary tumors. It is recommended to seek treatment targeting the underlying cause. Specific analyses are as follows:

　　1. Medication Effects

　　Certain medications, such as lithium, iodides, and some antipsychotic drugs, may interfere with normal thyroid function, leading to elevated TSH levels. Management includes discontinuing or switching medications under medical guidance and monitoring changes in TSH levels.

　　2. Viral Infection

　　When viruses invade the body and affect the thyroid gland, they may disrupt its normal function, causing TSH levels to rise to 5.4 mIU/L. Under a doctor's guidance, medications such as Lianhua Qingwen Capsules or Cefixime Capsules may be used for treatment.

　　3. Hypothyroidism

　　Hypothyroidism is one of the most common causes of elevated TSH levels. It occurs when the thyroid gland fails to produce sufficient thyroid hormones, resulting in increased TSH secretion. Patients are advised to take medications such as levothyroxine sodium tablets or thyroid extract tablets as prescribed.

　　4. Thyroid Nodules

　　Thyroid nodules are lumps within the thyroid tissue that may disrupt normal thyroid function and lead to elevated TSH levels. Treatment depends on the nature and size of the nodule and may include surgical removal or radioactive therapy.

　　5. Pituitary Tumor

　　A pituitary tumor is a growth within the pituitary gland that may interfere with its normal function, causing elevated TSH levels. Treatment options include surgical removal and radiation therapy.

　　If a patient experiences elevated TSH levels, prompt medical consultation and professional guidance are recommended.