If taking a warm shower or eating a good meal causes your heart to start racing with you becoming light headed and faint, you are probably dealing with a dysautonomia. Standard treatment is to elevate the serotonin levels with a medication like prozac(fluoxetine) an SNRI such as effexor would be even better for the additional nor-epinephrine release which would cause peripheral vasoconstriction. this would get rid of the dragged out feeling 2/2 dysautonomic peripheral vasodilation and would also bring a cns stimulation.
Effexor takes a high dose before the nor-epinephrine kicks. Me? I would go with 20 mg of fluoxetine at betime for about 10 days and then add 25mg of nortriptyline....5 mg of protriptyline would work better, but protriptyline is dirt cheap at wal-mart...side effets would be dry mouth, urinary retention and increase in blood pressure from the peripheral vasoconstriction JL