I'm new here, and an American, so I hope you don't mind me posting here.
I believe I've had hypothyroidism for about 13 years. I've always been a low energy person who gained weight easily, even as a kid. However, I did not get symptoms until my late 30s. My symptoms were extreme fatigue, oversleeping, and heavy and erratic menstruation. I was diagnosed three years ago (when I got health insurance for the first time - thank you Mr. President!) I was put on 0.5 mcg and later 0.7 mcg of levothyroxine. It took about a year to stabilize but I feel pretty good now. No symptoms. I was tested for hashimoto's and the test came back negative. I've asked the nurse practitioner that I see several times what the root cause of my hypothyroidism is, but she just brushes the question off. How can I find out what causes this condition?
About the same time the hypothyroid symptoms started, I had another issue. My skin would sometimes become extremely sensitive. This happened when I ate certain foods (junk foods and grains, mostly), when I was under extreme stress, and even when a took too hot of a shower. My skin would turn bright red, mostly on my face, arms and legs, and would get so sensitive that I could not wear clothes. My theory is that this condition was caused by an overactive immune system.
About five years ago I changed my diet radically. I dropped all sugar and white flour and started eating high antioxidant fruits and vegetables. It seemed to help, but not cure my skin condition. Then about two years ago I started taking a teaspoon of Amla powder (Indian gooseberry) every day. To my amazement, that seemed to cure my condition. I've since added daily turmeric and other herbs and spices. My skin is completely normal now (although if I fall off the wagon and eat junk food for long enough I start feeling tingles in my skin). I also have allergies in the spring and summer and have to take an antihistamine.
I've read that over 90 percent of hypothyroidism is caused by hashimoto's, which I've been told I don't have. I'm wondering if my overactive immune system could be in some other way responsible for my hypothyroidism? Or was I born with an under active thyroid? My family has no history of hypothyroidism at all. Is there any way to find out for sure what causes hypothyroidism?