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.