Hi I have a 2 & 1/2 year old little girl. She has been having a very fast heart rate, thirsty all the time, decreased appetite and fatigue at times. can sleep for hours at a times during the day. We are looking into going to the Children s Hospital. She has had a Echo done when she was 8 months old and they couldn t find anything. I am just worried they are missing something. Her heart feels like its going to pop out of her little body and she can be laying down not moving for hours and it still fells like that. She will also spike fevers 103.3, she has had all the way up to 105.6. About 99.9% of the time she is a happy little girl. you would never think anything is wrong with her if you just looked at her. She is highly allergic to dairy. I feel like I am a crazy mom because I have had doctors tell me there is nothing wrong with my child and I have over 180 photos of rashes that she has had along with other things. I truly feel deep down in my gut that there is something wrong and we are all missing it and my husband is starting to feel that way too after being able to work from home and see her more. We also just moved to a different state because of my husbands job and there is a children s hospital 2 hours and 30 mints from us now. Any help would be great thank you.