Hey! I am a 26 year old fml. I am an otherwise healthy girl . I have had hypothyroidism since I was 15. I remember 10 years ago I had started off on a lower dose and was slowly raised up to 100 mcg of synthroid. For years I have been on that dose and it was the right one for me and I felt great on it, I never felt like I had any symptoms. Last December, I had gone to my clinic to get a refil, and my regular doctor wasn't on scene, so a different doctor was filling in for him. This new doctor reviewed my tsh (which around 3 normal range of .3-5.6) at that point and decided that she could "tweek" my dose. She decided that I should get bumped to 125 mcg. Well thats when everything went downhill. After 6 weeks of being on that dose by tsh went to 0.07 and I felt awful. no body at the clinic even bothered to tell me that my results were in, I just assumed they were normal and kept taking the medication for 3 months. In those 3 months I had awful anxiety, I was losing muscle and being very lanky but not actually losing any pounds. I started breaking out in hives and acne., flushed skin, diarrhea.Had trouble sleeping. finally went to my doctor and he was surprised no one had called me. He then brought me down to 112 mcg.. and I still felt awful. constant diarrhea, anxiety and my tsh was at 0.88 . He said it was normal.. but I told him it wasn't normal for me. Finally I was brought down to my original dose of 100 mcg. After 6 weeks my tsh was at 1.74 and I feel much better. All my symptoms from the overmedication have stopped. Everything except for the flushed skin, and the hives and grainy skin. I wanted to know if anyone else experienced this and how long before the hives and your skin returned to normal. I went to even see an allergist for the hives, he said I wasn't allergic to anything but told me to take an anti histamine. but that doesn't stop the problem. Any insight would help!