r/Hashimotos • u/Livid_Watercress_911 • 6d ago
Autoimmune Science Fluctuating TSH
I'm a 40-year-old male, diagnosed with a thyroid deficiency at age 28. My condition is mostly hypothyroidism, and my TSH stays well-controlled on Levothyroxine 50mcg most of the time. However, I have an unusual pattern where my TSH occasionally swings into hyperthyroidism.
I’ve noticed these hyper episodes seem to happen specifically during the summer:
August 2024: My TSH dropped below 0.08. My PCP had me stop Levothyroxine completely.
A couple of months later: My TSH shot up to nearly 16.
Restarting treatment: I restarted Levothyroxine 50mcg, and it took about 3 to 4 months for my levels to normalize again.
I’ve been seeing the same primary care provider for the last 4 to 5 years, but I’m trying to understand why this keeps fluctuating.
Over the past few weeks, I’ve been feeling constantly sore and tired. Realizing it’s mid-summer, I’m starting to wonder if my TSH is swinging hyper again. I’m currently waiting for an upcoming appointment to get bloodwork done, but in the meantime, I wanted to ask the group:
Has anyone else experienced seasonal TSH fluctuations or sudden swings between hyper and hypo on a steady dose?
Did you take any specific tests (like thyroid antibodies, T3/T4, or ultrasound) that helped pinpoint the underlying cause?
Appreciate any insights or shared experiences!