Why does my boyfriend have fever, hives all over the body, and a swollen thyroid gland?

Q. Can hypothyroidism cause symptoms like fever, hives all over the body, and a swollen thyroid gland?

Answered by
Dr. Aqsa Zafar
and medically reviewed by iCliniq medical review team.
This is a premium question & answer published on Jun 27, 2022 and last reviewed on: Sep 16, 2023

Hello doctor,

My boyfriend is 39 years old and is a healthy person. After getting a shot of COVID-19 vaccination about a month ago, he had a slight fever. However, he started getting cold, became very weak, and only wanted to sleep. Also, he started having a fever and hives on his back, chest, arms, face, and head. He went to the emergency room thrice and was prescribed a steroid. After that, he started feeling better, and the hives started disappearing. However, the last steroid tablet was four days back. Today he has again developed the hives, and his thyroid gland is swollen.

Kindly help.



Welcome to icliniq.com.

I understand your concern and would be happy to help. The thyroid gland produces important hormones that play a role in your metabolism. Your boyfriend's symptoms are because of lower than normal production of thyroid hormones. Also, thyroid disease can sometimes cause repeated bouts of hives. As his thyroid gland is enlarged, he may be having hypothyroidism. I suggest complete blood count (CBC), FT3 (free tri-iodothyronine), FT4 (free thyroxine), TSH (thyroid-stimulating hormone), and ultrasound neck investigations to be done to confirm the diagnosis. Also, I suggest the below treatment plan:

  • Tablet Panadol 500 mg (Paracetamol) four to six hours.
  • Tablet Allegra (Fexofenadine) 60 mg twice daily.

I hope this helps.

Thank you.

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