@cometboy Have your doctors discussed "Dysautonomia"? It's refers to a group of disorders affecting the autonomic nervous system which controls automatic body functions like heart rate and blood pressure. Germany has taken the lead on 2 blood tests when individual Long Covid patients reported symptoms, those results were placed on a graph. Numbers in the attached graph indicate individual participants assigned to a given syndrome and/or syndrome intersections. Take a look at the symptoms overlap for ME/CSF, POTS, MCAS, and SFN (#65) as those individuals had ALL the symptoms for 4 diseases; ME/CSF, POTS, MCAS and SFN. If you have ALL symptoms for the 4 diseases and were diagnosed with just one of the symptom groups you reported without focusing on the other symptoms you have, treatments may need adjusting. Germany testing: altered receptor antibodies, most notably angiotensin II type 1; and, alpha-2B adrenergic receptor antibodies to determine those who are suffering from PACVS. Graphing showed them what to treat.