I was diagnosed with Hashimoto's four years ago, and am taking 75 mcg of levothyroxine daily. Over the past two weeks I have been experiencing hives on various parts of my body, mostly my hands and feet, but also at times on my face and chest. I have changed nothing in my diet, hygiene products, detergents, etc. Benadryl helps some, but not completely, and not for very long. I have read that hives can accompany autoimmune diseases. I am wondering what the mechanism is that causes this, and who else out there has experienced this and what I can do to help the problem.View Thread