I have an underactive thyroid and have started worrying about my youngest child who is 7. He started getting constipated some months ago and is now on very high doses of laxatives. He also seems to be putting on weight and his trousers are a struggle to get on. He otherwise seems well. I foolishly let the dentist paint some of his teeth with fluoride and he seems to have had these problems since.
Am I just being over anxious or could he had a thyroid problem. IF so how would I get it tested. I cant imagine to GP being too sympathetic.