My 13 year old daughter am has been diagnosed with POTS SYNDROM after having a TTT test done. She is also showing signs o asthma to which she never did before. Pots is hard enough now with this COUGHING which as you said makes her fill like she is going to pass out . She has been asking about a service dog. I don't know if she is considered disabled or what I need to do to as bad as it sounds prove that she is. Took us years to even get this far. She is wanting a golden poodle if this will help her I'm all in.