Q. When can I expect anxiety and weakness to get normal after thyroid blood levels are normal?

Answered by
Dr. Mashfika N Alam
and medically reviewed by iCliniq medical review team.
This is a premium question & answer published on Dec 14, 2018

Hello doctor,

I recently was hyperthyroid due to subacute thyroiditis and being misdiagnosed and given 75 mg of Synthroid on top of it. Became hyperthyroid of course. My blood levels were normal as of five months ago but I still experience anxiety and some muscle weakness. How long does it take that to return to normal after blood levels are normal? Currently, I am taking Klonopin and Zoloft for anxiety.

Dr. Mashfika N Alam

Family Physician General Practitioner


Welcome to icliniq.com.

Once your hormone levels have normalized, your symptoms should resolve too. Five months is too long for your symptoms to linger once your thyroid hormones are within the normal range. We need to look at other causes of the symptoms you are experiencing now like muscle weakness. If your electrolytes are deranged like a low potassium level, this can cause muscle weakness. I understand that you are on Klonopin and Zoloft. Are they for an existing anxiety disorder as this itself can cause muscle weakness along with anxiety? Also, it is advisable to get your thyroid hormones checked again as it has already been five months since last checkup. Let me know if you have other symptoms like dizziness, feeling tired, pigmentation, abdominal pain, etc., as these would need further evaluation.

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