Lyme disease. Dysautonomia. Two nasty names you hate to see in the same sentence.
Lyme disease can cause dysautonomia. That erratic dysfunction of the autonomic nervous system (ANS). Involuntary processes that are (supposed to be) regulated by the ANS go haywire.
Heart rate, blood pressure, breathing, all in disarray. Enter such things as mitral valve prolapse, neurocardiogenic syncope, and postural orthostatic tachycardia syndrome (POTS).
Think it's hard to say them? Try living with them.
Connie S. has been living with them for a number of years and she has a few pointers to pass on. Drink plenty of water and use lots of sea salt. This increases your blood volume and keeps the blood pressure and heart rate better bouyed.
Eat small frequent meals. And don't eat sugar or drink caffeine.
"If you suffer from POTS, avoiding standing for prolonged periods is important, but lying down for too long during the day actually exacerbates the problem. If you are bedridden due to Lyme, it is better to sit propped up on the sofa if you suffer from dysautonomia."
http://www.wellsphere.com/lyme-disease-article/help-for-dysautonomia-in-lyme-disease/98827