What does it mean if the erythrocyte sedimentation rate (ESR) is normal in subacute thyroiditis?

Normal erythrocyte sedimentation rate (ESR) in patients with subacute thyroiditis indicates effective control of inflammation and gradual clinical improvement.

Clinically, subacute thyroiditis typically progresses through three phases: the thyrotoxic phase, the hypothyroid phase, and the recovery phase. During the thyrotoxic phase, ESR is commonly elevated, along with increased white blood cell and neutrophil counts. With appropriate treatment, subacute thyroiditis gradually improves, and ESR levels consequently return to normal.

Subacute thyroiditis is a localized inflammatory condition of the thyroid gland associated with viral infection. Its clinical manifestations include fever and neck pain. Treatment primarily involves pharmacotherapy: nonsteroidal anti-inflammatory drugs (NSAIDs), such as aspirin, are generally used for their anti-inflammatory and analgesic effects; glucocorticoids are reserved for cases with worsening symptoms.

Prior to initiating treatment, patients with subacute thyroiditis must strictly adhere to their physician’s instructions regarding medication. They should consume ample fresh fruits and vegetables—such as grapefruit and celery—to supplement vitamins, ensure adequate rest, and avoid overexertion.