Dorothy, I had a very low thyroid and it is believed to have been from that. My GP at the time knew it was very low, but didn't think too much of it. When I went to my GYN he knew it was low as soon as he saw me. My skin was very dry, hair dry and falling out plus weight gain. Not to mention extreme fatigue. He retested and started me on synthroid. This was back in the 70's and apparently hypothyroidism wasn't taken too seriously by most GP's. In the 80's my mother, her twin sister and their two older sisters were diagnosed with it also. They probably had it all along and just went undiagnosed. If this should turn out to be your problem, it is easily treatable. Either way, there is still a very good chance your hair will grow back. I wish you all the best.

Hugs,
Pat