I was on the site reading your post and i believe we have the same symptoms. I am only freezing when my body is at rest and it prevents me from falling asleep at night. I never seem to get a decent nights' sleep and spend hours trying to get warm before eventually falling asleep. i am otherwise healthy and just had a medical done for life insurance that stated I was in outstanding good health. I've had thyroid issues in the past, but that was many years ago and tests for this have been coming back normal. Have you found out anything more? I am 38yrs old and also have three children.