I am a mother of a 15yr old boy, he was diagnosed with an illness that at times take over our lives. Doctors treat the symptoms because they do not know why, what or how to this illness and we have some wonderful Doctors, even they are frustrated. His heart beats to fast and to slow, he is tired alot, easily irritated by the sun, he gets hot internally daily, especially when it is warm out, he can not stand up quickly or he will pass out, he has headaches and some times stomach aches and this is on a good day, he has missed 50% of school due to illness. Oh and to add to it now the pigmentation in his skin is changing, dark spots (on neck and face and any where there is a cut). Is there anyone out there who knows what is going on with my child, Help!!!!