Is there a connection between problems with lipids (high cholesterol), circulatory problems, tingling parts which feels 'connected' to each other, and autoimmune problems? I also become ravanous for food (fat&salt), and left sided tingling on chest and tongue. Also a chronic dry cough. And serious fatigue and sleepiness. I do have Xanthomas (which are bumps on skin caused by high cholesterol) which I figured out myself but have not discussed with doctors yet.
I have no idea how this is all related. Most MRI and blood tests come back within range, and I it seems my undiagnosed problem falls into a number of catagories. Anyone else like this?

If my doctors don't know what is wrong or are dragging their feet, what should I try to get them to focus on?