I'm suspicious that my 10-year-old niece may be hypothyroid and may have Hashimoto's. I haven't seen anything on here about pediatric hypothyroidism. The reasons I'm susupicious are the following: she's very athletic and extremely active but is overweight, she has a problem with constipation, she has severe dry skin issues, she's recently been diagnosed as dyslexic, she frequently has stomach discomfort. Her mother (my sister) and I are both hypothyroid and her mother also has rheumatoid arthritis. Do you think I should pursue this? I don't have a lot of hope for assistance from her pediatrician, an M.D. How should I proceed?