I had never heard of Carnitine Palmitoyltransferase II Deficiency so thanks for the posting. It seems that you are probably correct in assuming that some other people at this forum have this deficiency as many of the symptoms are so close. And also similar in that both pnhe/bcfs and CPT can be triggered by a viral infection so the onset may seem to be the same to the victim. In looking it up on medical websites, CPT deficiency is supposedly in the domain of the metabolic doctor or nutritionist; how did you get your diagnosis - was it through one of these specialists? I don't think either is on my health plan, and would like to have at least the serum testing to rule it out because I do have a connection to more extreme exercise and symptoms. The medical web info only lists a few institutions that do the testing and I'm not in any of the metro areas or even states that run the tests connected with current research.It just is so amazing how many people are afflicted with similar symptoms and end up with different diagnoses: vitamin/mineral deficiencies, thyroid problems, Lyme disease, other autoimmune connections, anxiety disorders, and now this CPT. The human body is so complex.............Did you know that this posting went up so many times? That sometimes happens on this forum (especially if you try to edit or preview) so you need to go back and delete.Congratulations on a definitive diagnosis!!! An electrolyte containing beverage toast to you.