We show signs of
weak immune systems (variations of primary immunodeficiency, CVID), and «extra» allergies and sensitivities (now known to be mostly from a newly and thus still poorly recognized widespread mast cell activation disease called MCAS, ICD - 10 code coming October 2016, read «
Never Bet Against Occam» by L. Afrin, MD), as well as all manner of endocrine imbalances (esp low thyroid, and often
adrenal fatigue), some mitochondrial disease and / or dysfunction and all manner and forms of dysautonomia, but especially POTS in the more severe cases.