text: See another doctor.\n\nThey should probably do a renal ultrasound + dopplers of the renal blood vessels.  Your kidneys are involved in both BP regulation (through water+salt retention) and also RBC production (through erythropoetin secretion).  Damage to the kidneys and/or stenosis of the arteries could do this.  It is also possible that she has something called polycythemia vera which is a pathological overproduction of RBCs (are you by any chance, Jewish?).  It can cause all of the symptoms you described except the high BP.  What else?  Pheochromocytoma (adrenaline-secreting tumor).  This can be checked with a blood or urine test for metanephrines (metabolites of adrenaline).  Other tumors of the adrenal glands (check aldosterone levels).  She may also have a transient cardiac arrythmia that comes, causes her symptoms, then goes away before she sees the doctor (so they wouldn't see it).  If none of these things are the case, it might be worthwhile to look at her brain with an MRI or CT scan.  She probably has increased intracranial pressure, but it's hard to say whether that was caused by the high BP or is *causing* the high BP.\n\nKind of tough to figure out what is wrong with her without seeing her in person....